Home / 712,938.40-1,068,543.60-412,842.40

Finding the Fourth Proportional to 712,938.40, 1,068,543.60 and 412,842.40

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Solution

The fourth proportional to 712,938.40, 1,068,543.60 and 412,842.40 is: 618,763.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,938.40 : 1,068,543.60 = 412,842.40 : x
  2. Step 2: Convert to fraction form
    712,938.40/1,068,543.60 = 412,842.40/x
  3. Step 3: Cross multiply
    712,938.40x = 1,068,543.60 × 412,842.40
  4. Step 4: Simplify right side
    712,938.40x = 441,140,104,328.64
  5. Step 5: Solve for x
    x = 441,140,104,328.64/712,938.40
  6. Step 6: Final answer
    x = 618,763.28

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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.