Home / 656,719.13-906,272.40-354,913.13

Finding the Fourth Proportional to 656,719.13, 906,272.40 and 354,913.13

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Solution

The fourth proportional to 656,719.13, 906,272.40 and 354,913.13 is: 489,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,719.13 : 906,272.40 = 354,913.13 : x
  2. Step 2: Convert to fraction form
    656,719.13/906,272.40 = 354,913.13/x
  3. Step 3: Cross multiply
    656,719.13x = 906,272.40 × 354,913.13
  4. Step 4: Simplify right side
    656,719.13x = 321,647,969,585.25
  5. Step 5: Solve for x
    x = 321,647,969,585.25/656,719.13
  6. Step 6: Final answer
    x = 489,780.12

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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.