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Finding the Fourth Proportional to 648,601.20, 972,901.80 and 559,954.80

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Solution

The fourth proportional to 648,601.20, 972,901.80 and 559,954.80 is: 839,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,601.20 : 972,901.80 = 559,954.80 : x
  2. Step 2: Convert to fraction form
    648,601.20/972,901.80 = 559,954.80/x
  3. Step 3: Cross multiply
    648,601.20x = 972,901.80 × 559,954.80
  4. Step 4: Simplify right side
    648,601.20x = 544,781,032,838.64
  5. Step 5: Solve for x
    x = 544,781,032,838.64/648,601.20
  6. Step 6: Final answer
    x = 839,932.20

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.