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Finding the Fourth Proportional to 714,672.74, 985,967.10 and 408,584.68

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Solution

The fourth proportional to 714,672.74, 985,967.10 and 408,584.68 is: 563,686.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,672.74 : 985,967.10 = 408,584.68 : x
  2. Step 2: Convert to fraction form
    714,672.74/985,967.10 = 408,584.68/x
  3. Step 3: Cross multiply
    714,672.74x = 985,967.10 × 408,584.68
  4. Step 4: Simplify right side
    714,672.74x = 402,851,049,579.11
  5. Step 5: Solve for x
    x = 402,851,049,579.11/714,672.74
  6. Step 6: Final answer
    x = 563,686.04

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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.