Home / 615,440.23-849,350.31-343,561.20

Finding the Fourth Proportional to 615,440.23, 849,350.31 and 343,561.20

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Solution

The fourth proportional to 615,440.23, 849,350.31 and 343,561.20 is: 474,138.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,440.23 : 849,350.31 = 343,561.20 : x
  2. Step 2: Convert to fraction form
    615,440.23/849,350.31 = 343,561.20/x
  3. Step 3: Cross multiply
    615,440.23x = 849,350.31 × 343,561.20
  4. Step 4: Simplify right side
    615,440.23x = 291,803,807,250.55
  5. Step 5: Solve for x
    x = 291,803,807,250.55/615,440.23
  6. Step 6: Final answer
    x = 474,138.34

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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.