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Finding the Fourth Proportional to 510,777.78, 704,535.60 and 319,459.02

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Solution

The fourth proportional to 510,777.78, 704,535.60 and 319,459.02 is: 440,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,777.78 : 704,535.60 = 319,459.02 : x
  2. Step 2: Convert to fraction form
    510,777.78/704,535.60 = 319,459.02/x
  3. Step 3: Cross multiply
    510,777.78x = 704,535.60 × 319,459.02
  4. Step 4: Simplify right side
    510,777.78x = 225,070,252,331.11
  5. Step 5: Solve for x
    x = 225,070,252,331.11/510,777.78
  6. Step 6: Final answer
    x = 440,642.21

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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.