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Finding the Fourth Proportional to 978,868.40, 1,468,381.40 and 371,947.32

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Solution

The fourth proportional to 978,868.40, 1,468,381.40 and 371,947.32 is: 557,950.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,868.40 : 1,468,381.40 = 371,947.32 : x
  2. Step 2: Convert to fraction form
    978,868.40/1,468,381.40 = 371,947.32/x
  3. Step 3: Cross multiply
    978,868.40x = 1,468,381.40 × 371,947.32
  4. Step 4: Simplify right side
    978,868.40x = 546,160,525,176.83
  5. Step 5: Solve for x
    x = 546,160,525,176.83/978,868.40
  6. Step 6: Final answer
    x = 557,950.92

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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.