Home / 887,840.80-1,331,761.20-326,802.40

Finding the Fourth Proportional to 887,840.80, 1,331,761.20 and 326,802.40

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Solution

The fourth proportional to 887,840.80, 1,331,761.20 and 326,802.40 is: 490,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,840.80 : 1,331,761.20 = 326,802.40 : x
  2. Step 2: Convert to fraction form
    887,840.80/1,331,761.20 = 326,802.40/x
  3. Step 3: Cross multiply
    887,840.80x = 1,331,761.20 × 326,802.40
  4. Step 4: Simplify right side
    887,840.80x = 435,222,756,386.88
  5. Step 5: Solve for x
    x = 435,222,756,386.88/887,840.80
  6. Step 6: Final answer
    x = 490,203.60

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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.