Home / 680,177.72-1,020,397.78-380,996.12

Finding the Fourth Proportional to 680,177.72, 1,020,397.78 and 380,996.12

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Solution

The fourth proportional to 680,177.72, 1,020,397.78 and 380,996.12 is: 571,567.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,177.72 : 1,020,397.78 = 380,996.12 : x
  2. Step 2: Convert to fraction form
    680,177.72/1,020,397.78 = 380,996.12/x
  3. Step 3: Cross multiply
    680,177.72x = 1,020,397.78 × 380,996.12
  4. Step 4: Simplify right side
    680,177.72x = 388,767,595,036.61
  5. Step 5: Solve for x
    x = 388,767,595,036.61/680,177.72
  6. Step 6: Final answer
    x = 571,567.67

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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.