Home / 739,434.42-1,020,420.18-399,902.67

Finding the Fourth Proportional to 739,434.42, 1,020,420.18 and 399,902.67

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Solution

The fourth proportional to 739,434.42, 1,020,420.18 and 399,902.67 is: 551,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,434.42 : 1,020,420.18 = 399,902.67 : x
  2. Step 2: Convert to fraction form
    739,434.42/1,020,420.18 = 399,902.67/x
  3. Step 3: Cross multiply
    739,434.42x = 1,020,420.18 × 399,902.67
  4. Step 4: Simplify right side
    739,434.42x = 408,068,754,503.88
  5. Step 5: Solve for x
    x = 408,068,754,503.88/739,434.42
  6. Step 6: Final answer
    x = 551,866.05

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Half scale
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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.