Home / 780,142.68-1,170,254.54-247,705.40

Finding the Fourth Proportional to 780,142.68, 1,170,254.54 and 247,705.40

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Solution

The fourth proportional to 780,142.68, 1,170,254.54 and 247,705.40 is: 371,570.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,142.68 : 1,170,254.54 = 247,705.40 : x
  2. Step 2: Convert to fraction form
    780,142.68/1,170,254.54 = 247,705.40/x
  3. Step 3: Cross multiply
    780,142.68x = 1,170,254.54 × 247,705.40
  4. Step 4: Simplify right side
    780,142.68x = 289,878,368,932.52
  5. Step 5: Solve for x
    x = 289,878,368,932.52/780,142.68
  6. Step 6: Final answer
    x = 371,570.97

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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.