Home / 690,765.10-1,036,147.65-410,137.90

Finding the Fourth Proportional to 690,765.10, 1,036,147.65 and 410,137.90

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Solution

The fourth proportional to 690,765.10, 1,036,147.65 and 410,137.90 is: 615,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,765.10 : 1,036,147.65 = 410,137.90 : x
  2. Step 2: Convert to fraction form
    690,765.10/1,036,147.65 = 410,137.90/x
  3. Step 3: Cross multiply
    690,765.10x = 1,036,147.65 × 410,137.90
  4. Step 4: Simplify right side
    690,765.10x = 424,963,421,260.94
  5. Step 5: Solve for x
    x = 424,963,421,260.94/690,765.10
  6. Step 6: Final answer
    x = 615,206.85

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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.