Home / 1,240,946.70-1,861,420.05-815,793.90

Finding the Fourth Proportional to 1,240,946.70, 1,861,420.05 and 815,793.90

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Solution

The fourth proportional to 1,240,946.70, 1,861,420.05 and 815,793.90 is: 1,223,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,946.70 : 1,861,420.05 = 815,793.90 : x
  2. Step 2: Convert to fraction form
    1,240,946.70/1,861,420.05 = 815,793.90/x
  3. Step 3: Cross multiply
    1,240,946.70x = 1,861,420.05 × 815,793.90
  4. Step 4: Simplify right side
    1,240,946.70x = 1,518,535,122,127.70
  5. Step 5: Solve for x
    x = 1,518,535,122,127.70/1,240,946.70
  6. Step 6: Final answer
    x = 1,223,690.85

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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.