Home / 989,157.30-1,483,708.16-315,278.96

Finding the Fourth Proportional to 989,157.30, 1,483,708.16 and 315,278.96

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Solution

The fourth proportional to 989,157.30, 1,483,708.16 and 315,278.96 is: 472,909.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,157.30 : 1,483,708.16 = 315,278.96 : x
  2. Step 2: Convert to fraction form
    989,157.30/1,483,708.16 = 315,278.96/x
  3. Step 3: Cross multiply
    989,157.30x = 1,483,708.16 × 315,278.96
  4. Step 4: Simplify right side
    989,157.30x = 467,781,967,761.19
  5. Step 5: Solve for x
    x = 467,781,967,761.19/989,157.30
  6. Step 6: Final answer
    x = 472,909.58

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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.