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Finding the Fourth Proportional to 553,660.30, 830,490.45 and 301,061.80

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Solution

The fourth proportional to 553,660.30, 830,490.45 and 301,061.80 is: 451,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,660.30 : 830,490.45 = 301,061.80 : x
  2. Step 2: Convert to fraction form
    553,660.30/830,490.45 = 301,061.80/x
  3. Step 3: Cross multiply
    553,660.30x = 830,490.45 × 301,061.80
  4. Step 4: Simplify right side
    553,660.30x = 250,028,949,759.81
  5. Step 5: Solve for x
    x = 250,028,949,759.81/553,660.30
  6. Step 6: Final answer
    x = 451,592.70

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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.