Home / 521,986.60-782,979.90-452,002.60

Finding the Fourth Proportional to 521,986.60, 782,979.90 and 452,002.60

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Solution

The fourth proportional to 521,986.60, 782,979.90 and 452,002.60 is: 678,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,986.60 : 782,979.90 = 452,002.60 : x
  2. Step 2: Convert to fraction form
    521,986.60/782,979.90 = 452,002.60/x
  3. Step 3: Cross multiply
    521,986.60x = 782,979.90 × 452,002.60
  4. Step 4: Simplify right side
    521,986.60x = 353,908,950,547.74
  5. Step 5: Solve for x
    x = 353,908,950,547.74/521,986.60
  6. Step 6: Final answer
    x = 678,003.90

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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.