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Finding the Fourth Proportional to 713,372.40, 984,427.52 and 386,678.40

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Solution

The fourth proportional to 713,372.40, 984,427.52 and 386,678.40 is: 533,601.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,372.40 : 984,427.52 = 386,678.40 : x
  2. Step 2: Convert to fraction form
    713,372.40/984,427.52 = 386,678.40/x
  3. Step 3: Cross multiply
    713,372.40x = 984,427.52 × 386,678.40
  4. Step 4: Simplify right side
    713,372.40x = 380,656,858,349.57
  5. Step 5: Solve for x
    x = 380,656,858,349.57/713,372.40
  6. Step 6: Final answer
    x = 533,601.89

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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.