Home / 812,871.66-1,121,748.18-450,294.39

Finding the Fourth Proportional to 812,871.66, 1,121,748.18 and 450,294.39

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Solution

The fourth proportional to 812,871.66, 1,121,748.18 and 450,294.39 is: 621,398.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,871.66 : 1,121,748.18 = 450,294.39 : x
  2. Step 2: Convert to fraction form
    812,871.66/1,121,748.18 = 450,294.39/x
  3. Step 3: Cross multiply
    812,871.66x = 1,121,748.18 × 450,294.39
  4. Step 4: Simplify right side
    812,871.66x = 505,116,912,446.71
  5. Step 5: Solve for x
    x = 505,116,912,446.71/812,871.66
  6. Step 6: Final answer
    x = 621,398.11

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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.