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Finding the Fourth Proportional to 868,000.10, 1,302,000.15 and 749,804.90

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Solution

The fourth proportional to 868,000.10, 1,302,000.15 and 749,804.90 is: 1,124,707.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,000.10 : 1,302,000.15 = 749,804.90 : x
  2. Step 2: Convert to fraction form
    868,000.10/1,302,000.15 = 749,804.90/x
  3. Step 3: Cross multiply
    868,000.10x = 1,302,000.15 × 749,804.90
  4. Step 4: Simplify right side
    868,000.10x = 976,246,092,270.74
  5. Step 5: Solve for x
    x = 976,246,092,270.74/868,000.10
  6. Step 6: Final answer
    x = 1,124,707.35

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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.