Home / 521,986.10-782,979.15-452,002.10

Finding the Fourth Proportional to 521,986.10, 782,979.15 and 452,002.10

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Solution

The fourth proportional to 521,986.10, 782,979.15 and 452,002.10 is: 678,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,986.10 : 782,979.15 = 452,002.10 : x
  2. Step 2: Convert to fraction form
    521,986.10/782,979.15 = 452,002.10/x
  3. Step 3: Cross multiply
    521,986.10x = 782,979.15 × 452,002.10
  4. Step 4: Simplify right side
    521,986.10x = 353,908,220,056.22
  5. Step 5: Solve for x
    x = 353,908,220,056.22/521,986.10
  6. Step 6: Final answer
    x = 678,003.15

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Double scale
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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.