Home / 420,712,700.80-631,100,771.82-125,584,507.24

Finding the Fourth Proportional to 420,712,700.80, 631,100,771.82 and 125,584,507.24

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Solution

The fourth proportional to 420,712,700.80, 631,100,771.82 and 125,584,507.24 is: 188,386,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,712,700.80 : 631,100,771.82 = 125,584,507.24 : x
  2. Step 2: Convert to fraction form
    420,712,700.80/631,100,771.82 = 125,584,507.24/x
  3. Step 3: Cross multiply
    420,712,700.80x = 631,100,771.82 × 125,584,507.24
  4. Step 4: Simplify right side
    420,712,700.80x = 79,256,479,447,798,384
  5. Step 5: Solve for x
    x = 79,256,479,447,798,384/420,712,700.80
  6. Step 6: Final answer
    x = 188,386,229.60

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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.