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Finding the Fourth Proportional to 519,610.78, 716,798.70 and 315,607.42

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Solution

The fourth proportional to 519,610.78, 716,798.70 and 315,607.42 is: 435,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,610.78 : 716,798.70 = 315,607.42 : x
  2. Step 2: Convert to fraction form
    519,610.78/716,798.70 = 315,607.42/x
  3. Step 3: Cross multiply
    519,610.78x = 716,798.70 × 315,607.42
  4. Step 4: Simplify right side
    519,610.78x = 226,226,988,366.35
  5. Step 5: Solve for x
    x = 226,226,988,366.35/519,610.78
  6. Step 6: Final answer
    x = 435,377.78

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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.