Home / 813,972.25-1,123,281.71-456,276.25

Finding the Fourth Proportional to 813,972.25, 1,123,281.71 and 456,276.25

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Solution

The fourth proportional to 813,972.25, 1,123,281.71 and 456,276.25 is: 629,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,972.25 : 1,123,281.71 = 456,276.25 : x
  2. Step 2: Convert to fraction form
    813,972.25/1,123,281.71 = 456,276.25/x
  3. Step 3: Cross multiply
    813,972.25x = 1,123,281.71 × 456,276.25
  4. Step 4: Simplify right side
    813,972.25x = 512,526,766,332.39
  5. Step 5: Solve for x
    x = 512,526,766,332.39/813,972.25
  6. Step 6: Final answer
    x = 629,661.23

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Double scale
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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.