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Finding the Fourth Proportional to 970,809.60, 1,456,214.40 and 687,374.40

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Solution

The fourth proportional to 970,809.60, 1,456,214.40 and 687,374.40 is: 1,031,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,809.60 : 1,456,214.40 = 687,374.40 : x
  2. Step 2: Convert to fraction form
    970,809.60/1,456,214.40 = 687,374.40/x
  3. Step 3: Cross multiply
    970,809.60x = 1,456,214.40 × 687,374.40
  4. Step 4: Simplify right side
    970,809.60x = 1,000,964,499,471.36
  5. Step 5: Solve for x
    x = 1,000,964,499,471.36/970,809.60
  6. Step 6: Final answer
    x = 1,031,061.60

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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.