Home / 813,876.85-1,123,095.30-451,287.28

Finding the Fourth Proportional to 813,876.85, 1,123,095.30 and 451,287.28

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Solution

The fourth proportional to 813,876.85, 1,123,095.30 and 451,287.28 is: 622,746.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,876.85 : 1,123,095.30 = 451,287.28 : x
  2. Step 2: Convert to fraction form
    813,876.85/1,123,095.30 = 451,287.28/x
  3. Step 3: Cross multiply
    813,876.85x = 1,123,095.30 × 451,287.28
  4. Step 4: Simplify right side
    813,876.85x = 506,838,623,117.78
  5. Step 5: Solve for x
    x = 506,838,623,117.78/813,876.85
  6. Step 6: Final answer
    x = 622,746.09

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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.