Home / 763,479.90-1,145,219.85-745,765.20

Finding the Fourth Proportional to 763,479.90, 1,145,219.85 and 745,765.20

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Solution

The fourth proportional to 763,479.90, 1,145,219.85 and 745,765.20 is: 1,118,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,479.90 : 1,145,219.85 = 745,765.20 : x
  2. Step 2: Convert to fraction form
    763,479.90/1,145,219.85 = 745,765.20/x
  3. Step 3: Cross multiply
    763,479.90x = 1,145,219.85 × 745,765.20
  4. Step 4: Simplify right side
    763,479.90x = 854,065,110,479.22
  5. Step 5: Solve for x
    x = 854,065,110,479.22/763,479.90
  6. Step 6: Final answer
    x = 1,118,647.80

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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.