Home / 679,939.40-1,020,200.70-347,515.40

Finding the Fourth Proportional to 679,939.40, 1,020,200.70 and 347,515.40

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Solution

The fourth proportional to 679,939.40, 1,020,200.70 and 347,515.40 is: 521,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,939.40 : 1,020,200.70 = 347,515.40 : x
  2. Step 2: Convert to fraction form
    679,939.40/1,020,200.70 = 347,515.40/x
  3. Step 3: Cross multiply
    679,939.40x = 1,020,200.70 × 347,515.40
  4. Step 4: Simplify right side
    679,939.40x = 354,535,454,340.78
  5. Step 5: Solve for x
    x = 354,535,454,340.78/679,939.40
  6. Step 6: Final answer
    x = 521,422.14

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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.