Home / 714,247.67-985,690.17-391,969.38

Finding the Fourth Proportional to 714,247.67, 985,690.17 and 391,969.38

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Solution

The fourth proportional to 714,247.67, 985,690.17 and 391,969.38 is: 540,933.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,247.67 : 985,690.17 = 391,969.38 : x
  2. Step 2: Convert to fraction form
    714,247.67/985,690.17 = 391,969.38/x
  3. Step 3: Cross multiply
    714,247.67x = 985,690.17 × 391,969.38
  4. Step 4: Simplify right side
    714,247.67x = 386,360,364,807.00
  5. Step 5: Solve for x
    x = 386,360,364,807.00/714,247.67
  6. Step 6: Final answer
    x = 540,933.32

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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.