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Finding the Fourth Proportional to 545,124.40, 817,686.60 and 426,896.80

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Solution

The fourth proportional to 545,124.40, 817,686.60 and 426,896.80 is: 640,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,124.40 : 817,686.60 = 426,896.80 : x
  2. Step 2: Convert to fraction form
    545,124.40/817,686.60 = 426,896.80/x
  3. Step 3: Cross multiply
    545,124.40x = 817,686.60 × 426,896.80
  4. Step 4: Simplify right side
    545,124.40x = 349,067,792,942.88
  5. Step 5: Solve for x
    x = 349,067,792,942.88/545,124.40
  6. Step 6: Final answer
    x = 640,345.20

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Similar ratio
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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.