Home / 867,812.80-1,301,719.20-306,774.40

Finding the Fourth Proportional to 867,812.80, 1,301,719.20 and 306,774.40

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Solution

The fourth proportional to 867,812.80, 1,301,719.20 and 306,774.40 is: 460,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,812.80 : 1,301,719.20 = 306,774.40 : x
  2. Step 2: Convert to fraction form
    867,812.80/1,301,719.20 = 306,774.40/x
  3. Step 3: Cross multiply
    867,812.80x = 1,301,719.20 × 306,774.40
  4. Step 4: Simplify right side
    867,812.80x = 399,334,126,548.48
  5. Step 5: Solve for x
    x = 399,334,126,548.48/867,812.80
  6. Step 6: Final answer
    x = 460,161.60

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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.