Home / 722,012.46-996,373.60-390,867.45

Finding the Fourth Proportional to 722,012.46, 996,373.60 and 390,867.45

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Solution

The fourth proportional to 722,012.46, 996,373.60 and 390,867.45 is: 539,395.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,012.46 : 996,373.60 = 390,867.45 : x
  2. Step 2: Convert to fraction form
    722,012.46/996,373.60 = 390,867.45/x
  3. Step 3: Cross multiply
    722,012.46x = 996,373.60 × 390,867.45
  4. Step 4: Simplify right side
    722,012.46x = 389,450,008,279.32
  5. Step 5: Solve for x
    x = 389,450,008,279.32/722,012.46
  6. Step 6: Final answer
    x = 539,395.13

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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.