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Finding the Fourth Proportional to 498,911.54, 688,294.04 and 368,401.91

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Solution

The fourth proportional to 498,911.54, 688,294.04 and 368,401.91 is: 508,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,911.54 : 688,294.04 = 368,401.91 : x
  2. Step 2: Convert to fraction form
    498,911.54/688,294.04 = 368,401.91/x
  3. Step 3: Cross multiply
    498,911.54x = 688,294.04 × 368,401.91
  4. Step 4: Simplify right side
    498,911.54x = 253,568,833,694.14
  5. Step 5: Solve for x
    x = 253,568,833,694.14/498,911.54
  6. Step 6: Final answer
    x = 508,244.08

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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.