Home / 521,604,009.20-782,406,013.80-337,937,999.60

Finding the Fourth Proportional to 521,604,009.20, 782,406,013.80 and 337,937,999.60

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Solution

The fourth proportional to 521,604,009.20, 782,406,013.80 and 337,937,999.60 is: 506,906,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,604,009.20 : 782,406,013.80 = 337,937,999.60 : x
  2. Step 2: Convert to fraction form
    521,604,009.20/782,406,013.80 = 337,937,999.60/x
  3. Step 3: Cross multiply
    521,604,009.20x = 782,406,013.80 × 337,937,999.60
  4. Step 4: Simplify right side
    521,604,009.20x = 264,404,723,178,581,984
  5. Step 5: Solve for x
    x = 264,404,723,178,581,984/521,604,009.20
  6. Step 6: Final answer
    x = 506,906,999.40

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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.