Home / 739,302.60-1,020,243.70-408,169.20

Finding the Fourth Proportional to 739,302.60, 1,020,243.70 and 408,169.20

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Solution

The fourth proportional to 739,302.60, 1,020,243.70 and 408,169.20 is: 563,276.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,302.60 : 1,020,243.70 = 408,169.20 : x
  2. Step 2: Convert to fraction form
    739,302.60/1,020,243.70 = 408,169.20/x
  3. Step 3: Cross multiply
    739,302.60x = 1,020,243.70 × 408,169.20
  4. Step 4: Simplify right side
    739,302.60x = 416,432,054,834.04
  5. Step 5: Solve for x
    x = 416,432,054,834.04/739,302.60
  6. Step 6: Final answer
    x = 563,276.87

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