Home / 690,779.85-1,036,169.78-410,152.65

Finding the Fourth Proportional to 690,779.85, 1,036,169.78 and 410,152.65

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Solution

The fourth proportional to 690,779.85, 1,036,169.78 and 410,152.65 is: 615,228.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,779.85 : 1,036,169.78 = 410,152.65 : x
  2. Step 2: Convert to fraction form
    690,779.85/1,036,169.78 = 410,152.65/x
  3. Step 3: Cross multiply
    690,779.85x = 1,036,169.78 × 410,152.65
  4. Step 4: Simplify right side
    690,779.85x = 424,987,781,116.92
  5. Step 5: Solve for x
    x = 424,987,781,116.92/690,779.85
  6. Step 6: Final answer
    x = 615,228.98

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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.