Home / 780,113.90-1,170,084.45-219,205.10

Finding the Fourth Proportional to 780,113.90, 1,170,084.45 and 219,205.10

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Solution

The fourth proportional to 780,113.90, 1,170,084.45 and 219,205.10 is: 328,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,113.90 : 1,170,084.45 = 219,205.10 : x
  2. Step 2: Convert to fraction form
    780,113.90/1,170,084.45 = 219,205.10/x
  3. Step 3: Cross multiply
    780,113.90x = 1,170,084.45 × 219,205.10
  4. Step 4: Simplify right side
    780,113.90x = 256,488,478,870.70
  5. Step 5: Solve for x
    x = 256,488,478,870.70/780,113.90
  6. Step 6: Final answer
    x = 328,783.37

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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.