Home / 739,401.05-1,020,376.52-399,869.30

Finding the Fourth Proportional to 739,401.05, 1,020,376.52 and 399,869.30

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Solution

The fourth proportional to 739,401.05, 1,020,376.52 and 399,869.30 is: 551,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,401.05 : 1,020,376.52 = 399,869.30 : x
  2. Step 2: Convert to fraction form
    739,401.05/1,020,376.52 = 399,869.30/x
  3. Step 3: Cross multiply
    739,401.05x = 1,020,376.52 × 399,869.30
  4. Step 4: Simplify right side
    739,401.05x = 408,017,245,150.77
  5. Step 5: Solve for x
    x = 408,017,245,150.77/739,401.05
  6. Step 6: Final answer
    x = 551,821.30

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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.