Home / 815,831.40-1,223,747.10-626,655.90

Finding the Fourth Proportional to 815,831.40, 1,223,747.10 and 626,655.90

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Solution

The fourth proportional to 815,831.40, 1,223,747.10 and 626,655.90 is: 939,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,831.40 : 1,223,747.10 = 626,655.90 : x
  2. Step 2: Convert to fraction form
    815,831.40/1,223,747.10 = 626,655.90/x
  3. Step 3: Cross multiply
    815,831.40x = 1,223,747.10 × 626,655.90
  4. Step 4: Simplify right side
    815,831.40x = 766,868,340,322.89
  5. Step 5: Solve for x
    x = 766,868,340,322.89/815,831.40
  6. Step 6: Final answer
    x = 939,983.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.