Home / 498,736.10-688,246.52-280,945.46

Finding the Fourth Proportional to 498,736.10, 688,246.52 and 280,945.46

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Solution

The fourth proportional to 498,736.10, 688,246.52 and 280,945.46 is: 387,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,736.10 : 688,246.52 = 280,945.46 : x
  2. Step 2: Convert to fraction form
    498,736.10/688,246.52 = 280,945.46/x
  3. Step 3: Cross multiply
    498,736.10x = 688,246.52 × 280,945.46
  4. Step 4: Simplify right side
    498,736.10x = 193,359,735,154.80
  5. Step 5: Solve for x
    x = 193,359,735,154.80/498,736.10
  6. Step 6: Final answer
    x = 387,699.50

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1.5x scale

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.