Home / 439,521.60-655,587.40-399,159.12

Finding the Fourth Proportional to 439,521.60, 655,587.40 and 399,159.12

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Solution

The fourth proportional to 439,521.60, 655,587.40 and 399,159.12 is: 595,383.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,521.60 : 655,587.40 = 399,159.12 : x
  2. Step 2: Convert to fraction form
    439,521.60/655,587.40 = 399,159.12/x
  3. Step 3: Cross multiply
    439,521.60x = 655,587.40 × 399,159.12
  4. Step 4: Simplify right side
    439,521.60x = 261,683,689,667.09
  5. Step 5: Solve for x
    x = 261,683,689,667.09/439,521.60
  6. Step 6: Final answer
    x = 595,383.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.