Home / 665,522.42-918,090.29-393,457.79

Finding the Fourth Proportional to 665,522.42, 918,090.29 and 393,457.79

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Solution

The fourth proportional to 665,522.42, 918,090.29 and 393,457.79 is: 542,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,522.42 : 918,090.29 = 393,457.79 : x
  2. Step 2: Convert to fraction form
    665,522.42/918,090.29 = 393,457.79/x
  3. Step 3: Cross multiply
    665,522.42x = 918,090.29 × 393,457.79
  4. Step 4: Simplify right side
    665,522.42x = 361,229,769,966.12
  5. Step 5: Solve for x
    x = 361,229,769,966.12/665,522.42
  6. Step 6: Final answer
    x = 542,776.26

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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.