Home / 989,108.27-1,483,646.30-315,180.47

Finding the Fourth Proportional to 989,108.27, 1,483,646.30 and 315,180.47

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Solution

The fourth proportional to 989,108.27, 1,483,646.30 and 315,180.47 is: 472,765.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,108.27 : 1,483,646.30 = 315,180.47 : x
  2. Step 2: Convert to fraction form
    989,108.27/1,483,646.30 = 315,180.47/x
  3. Step 3: Cross multiply
    989,108.27x = 1,483,646.30 × 315,180.47
  4. Step 4: Simplify right side
    989,108.27x = 467,616,343,235.79
  5. Step 5: Solve for x
    x = 467,616,343,235.79/989,108.27
  6. Step 6: Final answer
    x = 472,765.58

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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.