Home / 871,385.65-1,307,300.22-511,860.53

Finding the Fourth Proportional to 871,385.65, 1,307,300.22 and 511,860.53

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Solution

The fourth proportional to 871,385.65, 1,307,300.22 and 511,860.53 is: 767,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,385.65 : 1,307,300.22 = 511,860.53 : x
  2. Step 2: Convert to fraction form
    871,385.65/1,307,300.22 = 511,860.53/x
  3. Step 3: Cross multiply
    871,385.65x = 1,307,300.22 × 511,860.53
  4. Step 4: Simplify right side
    871,385.65x = 669,155,386,746.57
  5. Step 5: Solve for x
    x = 669,155,386,746.57/871,385.65
  6. Step 6: Final answer
    x = 767,921.06

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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.