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Finding the Fourth Proportional to 424,671.20, 636,904.32 and 125,070.40

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Solution

The fourth proportional to 424,671.20, 636,904.32 and 125,070.40 is: 187,575.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,671.20 : 636,904.32 = 125,070.40 : x
  2. Step 2: Convert to fraction form
    424,671.20/636,904.32 = 125,070.40/x
  3. Step 3: Cross multiply
    424,671.20x = 636,904.32 × 125,070.40
  4. Step 4: Simplify right side
    424,671.20x = 79,657,878,064.13
  5. Step 5: Solve for x
    x = 79,657,878,064.13/424,671.20
  6. Step 6: Final answer
    x = 187,575.42

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1.5x scale

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.