Home / 858,274.20-1,288,258.76-644,298.12

Finding the Fourth Proportional to 858,274.20, 1,288,258.76 and 644,298.12

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Solution

The fourth proportional to 858,274.20, 1,288,258.76 and 644,298.12 is: 967,083.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,274.20 : 1,288,258.76 = 644,298.12 : x
  2. Step 2: Convert to fraction form
    858,274.20/1,288,258.76 = 644,298.12/x
  3. Step 3: Cross multiply
    858,274.20x = 1,288,258.76 × 644,298.12
  4. Step 4: Simplify right side
    858,274.20x = 830,022,697,141.53
  5. Step 5: Solve for x
    x = 830,022,697,141.53/858,274.20
  6. Step 6: Final answer
    x = 967,083.36

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1.5x scale

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.