Home / 519,719.28-717,090.48-315,764.16

Finding the Fourth Proportional to 519,719.28, 717,090.48 and 315,764.16

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Solution

The fourth proportional to 519,719.28, 717,090.48 and 315,764.16 is: 435,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,719.28 : 717,090.48 = 315,764.16 : x
  2. Step 2: Convert to fraction form
    519,719.28/717,090.48 = 315,764.16/x
  3. Step 3: Cross multiply
    519,719.28x = 717,090.48 × 315,764.16
  4. Step 4: Simplify right side
    519,719.28x = 226,431,473,061.20
  5. Step 5: Solve for x
    x = 226,431,473,061.20/519,719.28
  6. Step 6: Final answer
    x = 435,680.34

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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.