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Finding the Fourth Proportional to 459,772.40, 688,103.40 and 403,785.20

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Solution

The fourth proportional to 459,772.40, 688,103.40 and 403,785.20 is: 604,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,772.40 : 688,103.40 = 403,785.20 : x
  2. Step 2: Convert to fraction form
    459,772.40/688,103.40 = 403,785.20/x
  3. Step 3: Cross multiply
    459,772.40x = 688,103.40 × 403,785.20
  4. Step 4: Simplify right side
    459,772.40x = 277,845,968,989.68
  5. Step 5: Solve for x
    x = 277,845,968,989.68/459,772.40
  6. Step 6: Final answer
    x = 604,311.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.