Home / 898,683.79-1,240,177.31-490,785.73

Finding the Fourth Proportional to 898,683.79, 1,240,177.31 and 490,785.73

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Solution

The fourth proportional to 898,683.79, 1,240,177.31 and 490,785.73 is: 677,280.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,683.79 : 1,240,177.31 = 490,785.73 : x
  2. Step 2: Convert to fraction form
    898,683.79/1,240,177.31 = 490,785.73/x
  3. Step 3: Cross multiply
    898,683.79x = 1,240,177.31 × 490,785.73
  4. Step 4: Simplify right side
    898,683.79x = 608,661,326,417.79
  5. Step 5: Solve for x
    x = 608,661,326,417.79/898,683.79
  6. Step 6: Final answer
    x = 677,280.86

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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.