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Finding the Fourth Proportional to 970,775.60, 1,456,163.40 and 687,340.40

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Solution

The fourth proportional to 970,775.60, 1,456,163.40 and 687,340.40 is: 1,031,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,775.60 : 1,456,163.40 = 687,340.40 : x
  2. Step 2: Convert to fraction form
    970,775.60/1,456,163.40 = 687,340.40/x
  3. Step 3: Cross multiply
    970,775.60x = 1,456,163.40 × 687,340.40
  4. Step 4: Simplify right side
    970,775.60x = 1,000,879,933,821.36
  5. Step 5: Solve for x
    x = 1,000,879,933,821.36/970,775.60
  6. Step 6: Final answer
    x = 1,031,010.60

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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.