Home / 679,882.07-938,239.13-373,989.80

Finding the Fourth Proportional to 679,882.07, 938,239.13 and 373,989.80

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Solution

The fourth proportional to 679,882.07, 938,239.13 and 373,989.80 is: 516,106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,882.07 : 938,239.13 = 373,989.80 : x
  2. Step 2: Convert to fraction form
    679,882.07/938,239.13 = 373,989.80/x
  3. Step 3: Cross multiply
    679,882.07x = 938,239.13 × 373,989.80
  4. Step 4: Simplify right side
    679,882.07x = 350,891,860,824.65
  5. Step 5: Solve for x
    x = 350,891,860,824.65/679,882.07
  6. Step 6: Final answer
    x = 516,106.95

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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.