Home / 1,240,530.40-1,862,545.20-768,138.40

Finding the Fourth Proportional to 1,240,530.40, 1,862,545.20 and 768,138.40

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Solution

The fourth proportional to 1,240,530.40, 1,862,545.20 and 768,138.40 is: 1,153,290.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,530.40 : 1,862,545.20 = 768,138.40 : x
  2. Step 2: Convert to fraction form
    1,240,530.40/1,862,545.20 = 768,138.40/x
  3. Step 3: Cross multiply
    1,240,530.40x = 1,862,545.20 × 768,138.40
  4. Step 4: Simplify right side
    1,240,530.40x = 1,430,692,489,855.68
  5. Step 5: Solve for x
    x = 1,430,692,489,855.68/1,240,530.40
  6. Step 6: Final answer
    x = 1,153,290.96

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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.