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Finding the Fourth Proportional to 868,358.40, 1,302,537.60 and 807,532.80

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Solution

The fourth proportional to 868,358.40, 1,302,537.60 and 807,532.80 is: 1,211,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,358.40 : 1,302,537.60 = 807,532.80 : x
  2. Step 2: Convert to fraction form
    868,358.40/1,302,537.60 = 807,532.80/x
  3. Step 3: Cross multiply
    868,358.40x = 1,302,537.60 × 807,532.80
  4. Step 4: Simplify right side
    868,358.40x = 1,051,841,835,233.28
  5. Step 5: Solve for x
    x = 1,051,841,835,233.28/868,358.40
  6. Step 6: Final answer
    x = 1,211,299.20

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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.