Home / 498,839.08-688,624.56-317,799.28

Finding the Fourth Proportional to 498,839.08, 688,624.56 and 317,799.28

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Solution

The fourth proportional to 498,839.08, 688,624.56 and 317,799.28 is: 438,707.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,839.08 : 688,624.56 = 317,799.28 : x
  2. Step 2: Convert to fraction form
    498,839.08/688,624.56 = 317,799.28/x
  3. Step 3: Cross multiply
    498,839.08x = 688,624.56 × 317,799.28
  4. Step 4: Simplify right side
    498,839.08x = 218,844,389,358.32
  5. Step 5: Solve for x
    x = 218,844,389,358.32/498,839.08
  6. Step 6: Final answer
    x = 438,707.39

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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.