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Finding the Fourth Proportional to 771,238.80, 1,156,339.80 and 411,469.20

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Solution

The fourth proportional to 771,238.80, 1,156,339.80 and 411,469.20 is: 616,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,238.80 : 1,156,339.80 = 411,469.20 : x
  2. Step 2: Convert to fraction form
    771,238.80/1,156,339.80 = 411,469.20/x
  3. Step 3: Cross multiply
    771,238.80x = 1,156,339.80 × 411,469.20
  4. Step 4: Simplify right side
    771,238.80x = 475,798,212,434.16
  5. Step 5: Solve for x
    x = 475,798,212,434.16/771,238.80
  6. Step 6: Final answer
    x = 616,927.22

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1.5x scale

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.