Home / 989,159.18-1,483,710.95-315,280.86

Finding the Fourth Proportional to 989,159.18, 1,483,710.95 and 315,280.86

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Solution

The fourth proportional to 989,159.18, 1,483,710.95 and 315,280.86 is: 472,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,159.18 : 1,483,710.95 = 315,280.86 : x
  2. Step 2: Convert to fraction form
    989,159.18/1,483,710.95 = 315,280.86/x
  3. Step 3: Cross multiply
    989,159.18x = 1,483,710.95 × 315,280.86
  4. Step 4: Simplify right side
    989,159.18x = 467,785,659,531.70
  5. Step 5: Solve for x
    x = 467,785,659,531.70/989,159.18
  6. Step 6: Final answer
    x = 472,912.42

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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.