Home / 459,976.80-689,965.20-348,002.40

Finding the Fourth Proportional to 459,976.80, 689,965.20 and 348,002.40

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Solution

The fourth proportional to 459,976.80, 689,965.20 and 348,002.40 is: 522,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,976.80 : 689,965.20 = 348,002.40 : x
  2. Step 2: Convert to fraction form
    459,976.80/689,965.20 = 348,002.40/x
  3. Step 3: Cross multiply
    459,976.80x = 689,965.20 × 348,002.40
  4. Step 4: Simplify right side
    459,976.80x = 240,109,545,516.48
  5. Step 5: Solve for x
    x = 240,109,545,516.48/459,976.80
  6. Step 6: Final answer
    x = 522,003.60

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Similar ratio
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1.5x scale

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.