Home / 698,689.20-1,047,342.60-343,412.40

Finding the Fourth Proportional to 698,689.20, 1,047,342.60 and 343,412.40

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Solution

The fourth proportional to 698,689.20, 1,047,342.60 and 343,412.40 is: 514,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,689.20 : 1,047,342.60 = 343,412.40 : x
  2. Step 2: Convert to fraction form
    698,689.20/1,047,342.60 = 343,412.40/x
  3. Step 3: Cross multiply
    698,689.20x = 1,047,342.60 × 343,412.40
  4. Step 4: Simplify right side
    698,689.20x = 359,670,435,888.24
  5. Step 5: Solve for x
    x = 359,670,435,888.24/698,689.20
  6. Step 6: Final answer
    x = 514,778.87

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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.