Home / 989,471.78-1,484,269.20-358,391.06

Finding the Fourth Proportional to 989,471.78, 1,484,269.20 and 358,391.06

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Solution

The fourth proportional to 989,471.78, 1,484,269.20 and 358,391.06 is: 537,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,471.78 : 1,484,269.20 = 358,391.06 : x
  2. Step 2: Convert to fraction form
    989,471.78/1,484,269.20 = 358,391.06/x
  3. Step 3: Cross multiply
    989,471.78x = 1,484,269.20 × 358,391.06
  4. Step 4: Simplify right side
    989,471.78x = 531,948,811,913.35
  5. Step 5: Solve for x
    x = 531,948,811,913.35/989,471.78
  6. Step 6: Final answer
    x = 537,608.88

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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.