Home / 790,686.38-1,186,102.49-258,210.20

Finding the Fourth Proportional to 790,686.38, 1,186,102.49 and 258,210.20

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Solution

The fourth proportional to 790,686.38, 1,186,102.49 and 258,210.20 is: 387,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,686.38 : 1,186,102.49 = 258,210.20 : x
  2. Step 2: Convert to fraction form
    790,686.38/1,186,102.49 = 258,210.20/x
  3. Step 3: Cross multiply
    790,686.38x = 1,186,102.49 × 258,210.20
  4. Step 4: Simplify right side
    790,686.38x = 306,263,762,837.60
  5. Step 5: Solve for x
    x = 306,263,762,837.60/790,686.38
  6. Step 6: Final answer
    x = 387,339.11

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Double scale
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Similar ratio
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1.5x scale

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.