Home / 812,898.04-1,121,799.10-450,345.44

Finding the Fourth Proportional to 812,898.04, 1,121,799.10 and 450,345.44

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Solution

The fourth proportional to 812,898.04, 1,121,799.10 and 450,345.44 is: 621,476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,898.04 : 1,121,799.10 = 450,345.44 : x
  2. Step 2: Convert to fraction form
    812,898.04/1,121,799.10 = 450,345.44/x
  3. Step 3: Cross multiply
    812,898.04x = 1,121,799.10 × 450,345.44
  4. Step 4: Simplify right side
    812,898.04x = 505,197,109,281.10
  5. Step 5: Solve for x
    x = 505,197,109,281.10/812,898.04
  6. Step 6: Final answer
    x = 621,476.60

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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.