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Finding the Fourth Proportional to 553,633.70, 829,794.45 and 287,257.10

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Solution

The fourth proportional to 553,633.70, 829,794.45 and 287,257.10 is: 430,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,633.70 : 829,794.45 = 287,257.10 : x
  2. Step 2: Convert to fraction form
    553,633.70/829,794.45 = 287,257.10/x
  3. Step 3: Cross multiply
    553,633.70x = 829,794.45 × 287,257.10
  4. Step 4: Simplify right side
    553,633.70x = 238,364,347,303.10
  5. Step 5: Solve for x
    x = 238,364,347,303.10/553,633.70
  6. Step 6: Final answer
    x = 430,545.23

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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.