Home / 811,106.29-1,217,711.22-542,950.03

Finding the Fourth Proportional to 811,106.29, 1,217,711.22 and 542,950.03

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Solution

The fourth proportional to 811,106.29, 1,217,711.22 and 542,950.03 is: 815,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,106.29 : 1,217,711.22 = 542,950.03 : x
  2. Step 2: Convert to fraction form
    811,106.29/1,217,711.22 = 542,950.03/x
  3. Step 3: Cross multiply
    811,106.29x = 1,217,711.22 × 542,950.03
  4. Step 4: Simplify right side
    811,106.29x = 661,156,343,430.34
  5. Step 5: Solve for x
    x = 661,156,343,430.34/811,106.29
  6. Step 6: Final answer
    x = 815,129.10

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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.