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Finding the Fourth Proportional to 860,160.40, 1,288,685.40 and 735,744.40

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Solution

The fourth proportional to 860,160.40, 1,288,685.40 and 735,744.40 is: 1,102,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,160.40 : 1,288,685.40 = 735,744.40 : x
  2. Step 2: Convert to fraction form
    860,160.40/1,288,685.40 = 735,744.40/x
  3. Step 3: Cross multiply
    860,160.40x = 1,288,685.40 × 735,744.40
  4. Step 4: Simplify right side
    860,160.40x = 948,143,066,411.76
  5. Step 5: Solve for x
    x = 948,143,066,411.76/860,160.40
  6. Step 6: Final answer
    x = 1,102,286.35

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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.