Home / 1,209,293,747.80-1,668,821,279.22-680,657,427.64

Finding the Fourth Proportional to 1,209,293,747.80, 1,668,821,279.22 and 680,657,427.64

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Solution

The fourth proportional to 1,209,293,747.80, 1,668,821,279.22 and 680,657,427.64 is: 939,304,946.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,293,747.80 : 1,668,821,279.22 = 680,657,427.64 : x
  2. Step 2: Convert to fraction form
    1,209,293,747.80/1,668,821,279.22 = 680,657,427.64/x
  3. Step 3: Cross multiply
    1,209,293,747.80x = 1,668,821,279.22 × 680,657,427.64
  4. Step 4: Simplify right side
    1,209,293,747.80x = 1,135,895,599,104,779,392
  5. Step 5: Solve for x
    x = 1,135,895,599,104,779,392/1,209,293,747.80
  6. Step 6: Final answer
    x = 939,304,946.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.