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Finding the Fourth Proportional to 710,543.28, 980,538.06 and 388,246.44

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Solution

The fourth proportional to 710,543.28, 980,538.06 and 388,246.44 is: 535,773.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,543.28 : 980,538.06 = 388,246.44 : x
  2. Step 2: Convert to fraction form
    710,543.28/980,538.06 = 388,246.44/x
  3. Step 3: Cross multiply
    710,543.28x = 980,538.06 × 388,246.44
  4. Step 4: Simplify right side
    710,543.28x = 380,690,411,079.51
  5. Step 5: Solve for x
    x = 380,690,411,079.51/710,543.28
  6. Step 6: Final answer
    x = 535,773.71

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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.