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Finding the Fourth Proportional to 532,983.79, 735,281.38 and 317,998.86

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Solution

The fourth proportional to 532,983.79, 735,281.38 and 317,998.86 is: 438,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,983.79 : 735,281.38 = 317,998.86 : x
  2. Step 2: Convert to fraction form
    532,983.79/735,281.38 = 317,998.86/x
  3. Step 3: Cross multiply
    532,983.79x = 735,281.38 × 317,998.86
  4. Step 4: Simplify right side
    532,983.79x = 233,818,640,619.23
  5. Step 5: Solve for x
    x = 233,818,640,619.23/532,983.79
  6. Step 6: Final answer
    x = 438,697.47

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Double scale
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Similar ratio
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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.