Home / 2,811,758.40-4,217,983.20-917,985.60

Finding the Fourth Proportional to 2,811,758.40, 4,217,983.20 and 917,985.60

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Solution

The fourth proportional to 2,811,758.40, 4,217,983.20 and 917,985.60 is: 1,377,091.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,758.40 : 4,217,983.20 = 917,985.60 : x
  2. Step 2: Convert to fraction form
    2,811,758.40/4,217,983.20 = 917,985.60/x
  3. Step 3: Cross multiply
    2,811,758.40x = 4,217,983.20 × 917,985.60
  4. Step 4: Simplify right side
    2,811,758.40x = 3,872,047,838,641.92
  5. Step 5: Solve for x
    x = 3,872,047,838,641.92/2,811,758.40
  6. Step 6: Final answer
    x = 1,377,091.23

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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.