Home / 974,128.80-1,461,193.20-638,205.60

Finding the Fourth Proportional to 974,128.80, 1,461,193.20 and 638,205.60

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Solution

The fourth proportional to 974,128.80, 1,461,193.20 and 638,205.60 is: 957,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,128.80 : 1,461,193.20 = 638,205.60 : x
  2. Step 2: Convert to fraction form
    974,128.80/1,461,193.20 = 638,205.60/x
  3. Step 3: Cross multiply
    974,128.80x = 1,461,193.20 × 638,205.60
  4. Step 4: Simplify right side
    974,128.80x = 932,541,682,921.92
  5. Step 5: Solve for x
    x = 932,541,682,921.92/974,128.80
  6. Step 6: Final answer
    x = 957,308.40

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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.