Home / 780,602.90-1,170,106.79-442,930.23

Finding the Fourth Proportional to 780,602.90, 1,170,106.79 and 442,930.23

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Solution

The fourth proportional to 780,602.90, 1,170,106.79 and 442,930.23 is: 663,942.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,602.90 : 1,170,106.79 = 442,930.23 : x
  2. Step 2: Convert to fraction form
    780,602.90/1,170,106.79 = 442,930.23/x
  3. Step 3: Cross multiply
    780,602.90x = 1,170,106.79 × 442,930.23
  4. Step 4: Simplify right side
    780,602.90x = 518,275,667,404.61
  5. Step 5: Solve for x
    x = 518,275,667,404.61/780,602.90
  6. Step 6: Final answer
    x = 663,942.79

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1.5x scale

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.