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Finding the Fourth Proportional to 553,686.30, 830,529.45 and 301,087.80

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Solution

The fourth proportional to 553,686.30, 830,529.45 and 301,087.80 is: 451,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,686.30 : 830,529.45 = 301,087.80 : x
  2. Step 2: Convert to fraction form
    553,686.30/830,529.45 = 301,087.80/x
  3. Step 3: Cross multiply
    553,686.30x = 830,529.45 × 301,087.80
  4. Step 4: Simplify right side
    553,686.30x = 250,062,284,935.71
  5. Step 5: Solve for x
    x = 250,062,284,935.71/553,686.30
  6. Step 6: Final answer
    x = 451,631.70

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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.