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Finding the Fourth Proportional to 478,854.28, 660,843.30 and 274,903.72

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Solution

The fourth proportional to 478,854.28, 660,843.30 and 274,903.72 is: 379,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,854.28 : 660,843.30 = 274,903.72 : x
  2. Step 2: Convert to fraction form
    478,854.28/660,843.30 = 274,903.72/x
  3. Step 3: Cross multiply
    478,854.28x = 660,843.30 × 274,903.72
  4. Step 4: Simplify right side
    478,854.28x = 181,668,281,507.08
  5. Step 5: Solve for x
    x = 181,668,281,507.08/478,854.28
  6. Step 6: Final answer
    x = 379,381.14

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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.