Home / 911,999.60-1,258,386.20-572,314.76

Finding the Fourth Proportional to 911,999.60, 1,258,386.20 and 572,314.76

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Solution

The fourth proportional to 911,999.60, 1,258,386.20 and 572,314.76 is: 789,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,999.60 : 1,258,386.20 = 572,314.76 : x
  2. Step 2: Convert to fraction form
    911,999.60/1,258,386.20 = 572,314.76/x
  3. Step 3: Cross multiply
    911,999.60x = 1,258,386.20 × 572,314.76
  4. Step 4: Simplify right side
    911,999.60x = 720,192,996,040.31
  5. Step 5: Solve for x
    x = 720,192,996,040.31/911,999.60
  6. Step 6: Final answer
    x = 789,685.65

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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.