Home / 715,979.55-988,032.82-389,282.25

Finding the Fourth Proportional to 715,979.55, 988,032.82 and 389,282.25

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Solution

The fourth proportional to 715,979.55, 988,032.82 and 389,282.25 is: 537,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,979.55 : 988,032.82 = 389,282.25 : x
  2. Step 2: Convert to fraction form
    715,979.55/988,032.82 = 389,282.25/x
  3. Step 3: Cross multiply
    715,979.55x = 988,032.82 × 389,282.25
  4. Step 4: Simplify right side
    715,979.55x = 384,623,639,243.45
  5. Step 5: Solve for x
    x = 384,623,639,243.45/715,979.55
  6. Step 6: Final answer
    x = 537,199.20

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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.