Home / 1,025,755,968.80-1,539,389,780.40-412,780,109.60

Finding the Fourth Proportional to 1,025,755,968.80, 1,539,389,780.40 and 412,780,109.60

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Solution

The fourth proportional to 1,025,755,968.80, 1,539,389,780.40 and 412,780,109.60 is: 619,474,320.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025,755,968.80 : 1,539,389,780.40 = 412,780,109.60 : x
  2. Step 2: Convert to fraction form
    1,025,755,968.80/1,539,389,780.40 = 412,780,109.60/x
  3. Step 3: Cross multiply
    1,025,755,968.80x = 1,539,389,780.40 × 412,780,109.60
  4. Step 4: Simplify right side
    1,025,755,968.80x = 635,429,482,270,632,064
  5. Step 5: Solve for x
    x = 635,429,482,270,632,064/1,025,755,968.80
  6. Step 6: Final answer
    x = 619,474,320.99

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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.