Home / 717,669.29-989,020.89-513,365.38

Finding the Fourth Proportional to 717,669.29, 989,020.89 and 513,365.38

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Solution

The fourth proportional to 717,669.29, 989,020.89 and 513,365.38 is: 707,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,669.29 : 989,020.89 = 513,365.38 : x
  2. Step 2: Convert to fraction form
    717,669.29/989,020.89 = 513,365.38/x
  3. Step 3: Cross multiply
    717,669.29x = 989,020.89 × 513,365.38
  4. Step 4: Simplify right side
    717,669.29x = 507,729,085,022.79
  5. Step 5: Solve for x
    x = 507,729,085,022.79/717,669.29
  6. Step 6: Final answer
    x = 707,469.43

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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.