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Finding the Fourth Proportional to 612,782.77, 845,640.22 and 344,510.77

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Solution

The fourth proportional to 612,782.77, 845,640.22 and 344,510.77 is: 475,424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,782.77 : 845,640.22 = 344,510.77 : x
  2. Step 2: Convert to fraction form
    612,782.77/845,640.22 = 344,510.77/x
  3. Step 3: Cross multiply
    612,782.77x = 845,640.22 × 344,510.77
  4. Step 4: Simplify right side
    612,782.77x = 291,332,160,359.79
  5. Step 5: Solve for x
    x = 291,332,160,359.79/612,782.77
  6. Step 6: Final answer
    x = 475,424.86

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.