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Finding the Fourth Proportional to 514,440.80, 771,661.20 and 346,479.20

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Solution

The fourth proportional to 514,440.80, 771,661.20 and 346,479.20 is: 519,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,440.80 : 771,661.20 = 346,479.20 : x
  2. Step 2: Convert to fraction form
    514,440.80/771,661.20 = 346,479.20/x
  3. Step 3: Cross multiply
    514,440.80x = 771,661.20 × 346,479.20
  4. Step 4: Simplify right side
    514,440.80x = 267,364,555,247.04
  5. Step 5: Solve for x
    x = 267,364,555,247.04/514,440.80
  6. Step 6: Final answer
    x = 519,718.80

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Similar ratio
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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.