Home / 656,625.15-905,988.37-398,496.38

Finding the Fourth Proportional to 656,625.15, 905,988.37 and 398,496.38

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Solution

The fourth proportional to 656,625.15, 905,988.37 and 398,496.38 is: 549,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,625.15 : 905,988.37 = 398,496.38 : x
  2. Step 2: Convert to fraction form
    656,625.15/905,988.37 = 398,496.38/x
  3. Step 3: Cross multiply
    656,625.15x = 905,988.37 × 398,496.38
  4. Step 4: Simplify right side
    656,625.15x = 361,033,085,767.10
  5. Step 5: Solve for x
    x = 361,033,085,767.10/656,625.15
  6. Step 6: Final answer
    x = 549,831.34

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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.