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Finding the Fourth Proportional to 917,113.60, 1,375,670.40 and 693,164.80

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Solution

The fourth proportional to 917,113.60, 1,375,670.40 and 693,164.80 is: 1,039,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,113.60 : 1,375,670.40 = 693,164.80 : x
  2. Step 2: Convert to fraction form
    917,113.60/1,375,670.40 = 693,164.80/x
  3. Step 3: Cross multiply
    917,113.60x = 1,375,670.40 × 693,164.80
  4. Step 4: Simplify right side
    917,113.60x = 953,566,297,681.92
  5. Step 5: Solve for x
    x = 953,566,297,681.92/917,113.60
  6. Step 6: Final answer
    x = 1,039,747.20

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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.