Home / 871,386.65-1,307,301.72-511,861.53

Finding the Fourth Proportional to 871,386.65, 1,307,301.72 and 511,861.53

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Solution

The fourth proportional to 871,386.65, 1,307,301.72 and 511,861.53 is: 767,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,386.65 : 1,307,301.72 = 511,861.53 : x
  2. Step 2: Convert to fraction form
    871,386.65/1,307,301.72 = 511,861.53/x
  3. Step 3: Cross multiply
    871,386.65x = 1,307,301.72 × 511,861.53
  4. Step 4: Simplify right side
    871,386.65x = 669,157,458,570.83
  5. Step 5: Solve for x
    x = 669,157,458,570.83/871,386.65
  6. Step 6: Final answer
    x = 767,922.55

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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.