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Finding the Fourth Proportional to 686,209.80, 947,328 and 532,904.04

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Solution

The fourth proportional to 686,209.80, 947,328 and 532,904.04 is: 735,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,209.80 : 947,328 = 532,904.04 : x
  2. Step 2: Convert to fraction form
    686,209.80/947,328 = 532,904.04/x
  3. Step 3: Cross multiply
    686,209.80x = 947,328 × 532,904.04
  4. Step 4: Simplify right side
    686,209.80x = 504,834,918,405.12
  5. Step 5: Solve for x
    x = 504,834,918,405.12/686,209.80
  6. Step 6: Final answer
    x = 735,685.96

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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.