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Finding the Fourth Proportional to 911,632.40, 1,368,679.80 and 532,941.20

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Solution

The fourth proportional to 911,632.40, 1,368,679.80 and 532,941.20 is: 800,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,632.40 : 1,368,679.80 = 532,941.20 : x
  2. Step 2: Convert to fraction form
    911,632.40/1,368,679.80 = 532,941.20/x
  3. Step 3: Cross multiply
    911,632.40x = 1,368,679.80 × 532,941.20
  4. Step 4: Simplify right side
    911,632.40x = 729,425,855,027.76
  5. Step 5: Solve for x
    x = 729,425,855,027.76/911,632.40
  6. Step 6: Final answer
    x = 800,131.56

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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.