Home / 523,139.76-782,670.12-458,585.45

Finding the Fourth Proportional to 523,139.76, 782,670.12 and 458,585.45

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Solution

The fourth proportional to 523,139.76, 782,670.12 and 458,585.45 is: 686,090.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,139.76 : 782,670.12 = 458,585.45 : x
  2. Step 2: Convert to fraction form
    523,139.76/782,670.12 = 458,585.45/x
  3. Step 3: Cross multiply
    523,139.76x = 782,670.12 × 458,585.45
  4. Step 4: Simplify right side
    523,139.76x = 358,921,125,268.40
  5. Step 5: Solve for x
    x = 358,921,125,268.40/523,139.76
  6. Step 6: Final answer
    x = 686,090.32

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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.