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Finding the Fourth Proportional to 917,097.60, 1,375,646.40 and 693,148.80

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Solution

The fourth proportional to 917,097.60, 1,375,646.40 and 693,148.80 is: 1,039,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,097.60 : 1,375,646.40 = 693,148.80 : x
  2. Step 2: Convert to fraction form
    917,097.60/1,375,646.40 = 693,148.80/x
  3. Step 3: Cross multiply
    917,097.60x = 1,375,646.40 × 693,148.80
  4. Step 4: Simplify right side
    917,097.60x = 953,527,651,384.32
  5. Step 5: Solve for x
    x = 953,527,651,384.32/917,097.60
  6. Step 6: Final answer
    x = 1,039,723.20

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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.