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Finding the Fourth Proportional to 498,367.64, 688,646.96 and 354,878.57

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Solution

The fourth proportional to 498,367.64, 688,646.96 and 354,878.57 is: 490,373.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,367.64 : 688,646.96 = 354,878.57 : x
  2. Step 2: Convert to fraction form
    498,367.64/688,646.96 = 354,878.57/x
  3. Step 3: Cross multiply
    498,367.64x = 688,646.96 × 354,878.57
  4. Step 4: Simplify right side
    498,367.64x = 244,386,044,512.81
  5. Step 5: Solve for x
    x = 244,386,044,512.81/498,367.64
  6. Step 6: Final answer
    x = 490,373.02

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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.