Home / 877,869.90-1,315,930.05-403,728.30

Finding the Fourth Proportional to 877,869.90, 1,315,930.05 and 403,728.30

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Solution

The fourth proportional to 877,869.90, 1,315,930.05 and 403,728.30 is: 605,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,869.90 : 1,315,930.05 = 403,728.30 : x
  2. Step 2: Convert to fraction form
    877,869.90/1,315,930.05 = 403,728.30/x
  3. Step 3: Cross multiply
    877,869.90x = 1,315,930.05 × 403,728.30
  4. Step 4: Simplify right side
    877,869.90x = 531,278,202,005.42
  5. Step 5: Solve for x
    x = 531,278,202,005.42/877,869.90
  6. Step 6: Final answer
    x = 605,190.13

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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.