Home / 898,766.70-1,240,291.40-490,868.72

Finding the Fourth Proportional to 898,766.70, 1,240,291.40 and 490,868.72

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Solution

The fourth proportional to 898,766.70, 1,240,291.40 and 490,868.72 is: 677,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,766.70 : 1,240,291.40 = 490,868.72 : x
  2. Step 2: Convert to fraction form
    898,766.70/1,240,291.40 = 490,868.72/x
  3. Step 3: Cross multiply
    898,766.70x = 1,240,291.40 × 490,868.72
  4. Step 4: Simplify right side
    898,766.70x = 608,820,251,945.01
  5. Step 5: Solve for x
    x = 608,820,251,945.01/898,766.70
  6. Step 6: Final answer
    x = 677,395.20

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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.