Home / 885,251.60-1,328,309.40-411,693.20

Finding the Fourth Proportional to 885,251.60, 1,328,309.40 and 411,693.20

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Solution

The fourth proportional to 885,251.60, 1,328,309.40 and 411,693.20 is: 617,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,251.60 : 1,328,309.40 = 411,693.20 : x
  2. Step 2: Convert to fraction form
    885,251.60/1,328,309.40 = 411,693.20/x
  3. Step 3: Cross multiply
    885,251.60x = 1,328,309.40 × 411,693.20
  4. Step 4: Simplify right side
    885,251.60x = 546,855,947,476.08
  5. Step 5: Solve for x
    x = 546,855,947,476.08/885,251.60
  6. Step 6: Final answer
    x = 617,740.70

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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.