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Finding the Fourth Proportional to 544,586.40, 817,657.20 and 426,391.20

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Solution

The fourth proportional to 544,586.40, 817,657.20 and 426,391.20 is: 640,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,586.40 : 817,657.20 = 426,391.20 : x
  2. Step 2: Convert to fraction form
    544,586.40/817,657.20 = 426,391.20/x
  3. Step 3: Cross multiply
    544,586.40x = 817,657.20 × 426,391.20
  4. Step 4: Simplify right side
    544,586.40x = 348,641,834,696.64
  5. Step 5: Solve for x
    x = 348,641,834,696.64/544,586.40
  6. Step 6: Final answer
    x = 640,195.63

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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.