Home / 912,318.78-1,258,968.15-498,865.20

Finding the Fourth Proportional to 912,318.78, 1,258,968.15 and 498,865.20

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Solution

The fourth proportional to 912,318.78, 1,258,968.15 and 498,865.20 is: 688,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,318.78 : 1,258,968.15 = 498,865.20 : x
  2. Step 2: Convert to fraction form
    912,318.78/1,258,968.15 = 498,865.20/x
  3. Step 3: Cross multiply
    912,318.78x = 1,258,968.15 × 498,865.20
  4. Step 4: Simplify right side
    912,318.78x = 628,055,397,943.38
  5. Step 5: Solve for x
    x = 628,055,397,943.38/912,318.78
  6. Step 6: Final answer
    x = 688,416.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.