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Finding the Fourth Proportional to 545,998.71, 753,480.75 and 316,691.76

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Solution

The fourth proportional to 545,998.71, 753,480.75 and 316,691.76 is: 437,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,998.71 : 753,480.75 = 316,691.76 : x
  2. Step 2: Convert to fraction form
    545,998.71/753,480.75 = 316,691.76/x
  3. Step 3: Cross multiply
    545,998.71x = 753,480.75 × 316,691.76
  4. Step 4: Simplify right side
    545,998.71x = 238,621,146,727.32
  5. Step 5: Solve for x
    x = 238,621,146,727.32/545,998.71
  6. Step 6: Final answer
    x = 437,036.10

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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.