Home / 778,281.90-1,167,422.85-645,421.65

Finding the Fourth Proportional to 778,281.90, 1,167,422.85 and 645,421.65

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Solution

The fourth proportional to 778,281.90, 1,167,422.85 and 645,421.65 is: 968,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,281.90 : 1,167,422.85 = 645,421.65 : x
  2. Step 2: Convert to fraction form
    778,281.90/1,167,422.85 = 645,421.65/x
  3. Step 3: Cross multiply
    778,281.90x = 1,167,422.85 × 645,421.65
  4. Step 4: Simplify right side
    778,281.90x = 753,479,982,094.70
  5. Step 5: Solve for x
    x = 753,479,982,094.70/778,281.90
  6. Step 6: Final answer
    x = 968,132.48

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Similar ratio
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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.