Home / 680,870.28-1,021,458.57-207,603.48

Finding the Fourth Proportional to 680,870.28, 1,021,458.57 and 207,603.48

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Solution

The fourth proportional to 680,870.28, 1,021,458.57 and 207,603.48 is: 311,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,870.28 : 1,021,458.57 = 207,603.48 : x
  2. Step 2: Convert to fraction form
    680,870.28/1,021,458.57 = 207,603.48/x
  3. Step 3: Cross multiply
    680,870.28x = 1,021,458.57 × 207,603.48
  4. Step 4: Simplify right side
    680,870.28x = 212,058,353,807.82
  5. Step 5: Solve for x
    x = 212,058,353,807.82/680,870.28
  6. Step 6: Final answer
    x = 311,451.92

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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.