Home / 771,006.80-1,156,510.20-272,421.20

Finding the Fourth Proportional to 771,006.80, 1,156,510.20 and 272,421.20

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Solution

The fourth proportional to 771,006.80, 1,156,510.20 and 272,421.20 is: 408,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,006.80 : 1,156,510.20 = 272,421.20 : x
  2. Step 2: Convert to fraction form
    771,006.80/1,156,510.20 = 272,421.20/x
  3. Step 3: Cross multiply
    771,006.80x = 1,156,510.20 × 272,421.20
  4. Step 4: Simplify right side
    771,006.80x = 315,057,896,496.24
  5. Step 5: Solve for x
    x = 315,057,896,496.24/771,006.80
  6. Step 6: Final answer
    x = 408,631.80

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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.