Home / 475,128.16-712,823.46-422,902.60

Finding the Fourth Proportional to 475,128.16, 712,823.46 and 422,902.60

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Solution

The fourth proportional to 475,128.16, 712,823.46 and 422,902.60 is: 634,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,128.16 : 712,823.46 = 422,902.60 : x
  2. Step 2: Convert to fraction form
    475,128.16/712,823.46 = 422,902.60/x
  3. Step 3: Cross multiply
    475,128.16x = 712,823.46 × 422,902.60
  4. Step 4: Simplify right side
    475,128.16x = 301,454,894,575.00
  5. Step 5: Solve for x
    x = 301,454,894,575.00/475,128.16
  6. Step 6: Final answer
    x = 634,470.70

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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.