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Finding the Fourth Proportional to 868,401.40, 1,302,602.10 and 807,575.80

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Solution

The fourth proportional to 868,401.40, 1,302,602.10 and 807,575.80 is: 1,211,363.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,401.40 : 1,302,602.10 = 807,575.80 : x
  2. Step 2: Convert to fraction form
    868,401.40/1,302,602.10 = 807,575.80/x
  3. Step 3: Cross multiply
    868,401.40x = 1,302,602.10 × 807,575.80
  4. Step 4: Simplify right side
    868,401.40x = 1,051,949,932,989.18
  5. Step 5: Solve for x
    x = 1,051,949,932,989.18/868,401.40
  6. Step 6: Final answer
    x = 1,211,363.70

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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.