Home / 1,292,420,303,918.80-1,938,630,456,011.40-431,894,473,394.55

Finding the Fourth Proportional to 1,292,420,303,918.80, 1,938,630,456,011.40 and 431,894,473,394.55

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Solution

The fourth proportional to 1,292,420,303,918.80, 1,938,630,456,011.40 and 431,894,473,394.55 is: 647,841,710,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,420,303,918.80 : 1,938,630,456,011.40 = 431,894,473,394.55 : x
  2. Step 2: Convert to fraction form
    1,292,420,303,918.80/1,938,630,456,011.40 = 431,894,473,394.55/x
  3. Step 3: Cross multiply
    1,292,420,303,918.80x = 1,938,630,456,011.40 × 431,894,473,394.55
  4. Step 4: Simplify right side
    1,292,420,303,918.80x = 837,283,779,905,679,809,052,672
  5. Step 5: Solve for x
    x = 837,283,779,905,679,809,052,672/1,292,420,303,918.80
  6. Step 6: Final answer
    x = 647,841,710,136.34

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.