Home / 721,133.79-1,081,220.18-397,074.48

Finding the Fourth Proportional to 721,133.79, 1,081,220.18 and 397,074.48

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Solution

The fourth proportional to 721,133.79, 1,081,220.18 and 397,074.48 is: 595,347.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,133.79 : 1,081,220.18 = 397,074.48 : x
  2. Step 2: Convert to fraction form
    721,133.79/1,081,220.18 = 397,074.48/x
  3. Step 3: Cross multiply
    721,133.79x = 1,081,220.18 × 397,074.48
  4. Step 4: Simplify right side
    721,133.79x = 429,324,938,753.63
  5. Step 5: Solve for x
    x = 429,324,938,753.63/721,133.79
  6. Step 6: Final answer
    x = 595,347.14

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Double scale
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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.