Home / 876,720,576.78-1,209,415,699.82-542,086,129.70

Finding the Fourth Proportional to 876,720,576.78, 1,209,415,699.82 and 542,086,129.70

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Solution

The fourth proportional to 876,720,576.78, 1,209,415,699.82 and 542,086,129.70 is: 747,795,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,720,576.78 : 1,209,415,699.82 = 542,086,129.70 : x
  2. Step 2: Convert to fraction form
    876,720,576.78/1,209,415,699.82 = 542,086,129.70/x
  3. Step 3: Cross multiply
    876,720,576.78x = 1,209,415,699.82 × 542,086,129.70
  4. Step 4: Simplify right side
    876,720,576.78x = 655,607,475,913,840,768
  5. Step 5: Solve for x
    x = 655,607,475,913,840,768/876,720,576.78
  6. Step 6: Final answer
    x = 747,795,242.04

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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.