Home / 818,398.38-1,129,190.60-538,966.72

Finding the Fourth Proportional to 818,398.38, 1,129,190.60 and 538,966.72

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Solution

The fourth proportional to 818,398.38, 1,129,190.60 and 538,966.72 is: 743,642.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,398.38 : 1,129,190.60 = 538,966.72 : x
  2. Step 2: Convert to fraction form
    818,398.38/1,129,190.60 = 538,966.72/x
  3. Step 3: Cross multiply
    818,398.38x = 1,129,190.60 × 538,966.72
  4. Step 4: Simplify right side
    818,398.38x = 608,596,151,839.81
  5. Step 5: Solve for x
    x = 608,596,151,839.81/818,398.38
  6. Step 6: Final answer
    x = 743,642.91

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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.