Home / 989,113.76-1,483,654.40-315,186

Finding the Fourth Proportional to 989,113.76, 1,483,654.40 and 315,186

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Solution

The fourth proportional to 989,113.76, 1,483,654.40 and 315,186 is: 472,773.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,113.76 : 1,483,654.40 = 315,186 : x
  2. Step 2: Convert to fraction form
    989,113.76/1,483,654.40 = 315,186/x
  3. Step 3: Cross multiply
    989,113.76x = 1,483,654.40 × 315,186
  4. Step 4: Simplify right side
    989,113.76x = 467,627,095,718.40
  5. Step 5: Solve for x
    x = 467,627,095,718.40/989,113.76
  6. Step 6: Final answer
    x = 472,773.83

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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.