Home / 1,386,530.72-2,079,790.60-439,975.24

Finding the Fourth Proportional to 1,386,530.72, 2,079,790.60 and 439,975.24

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Solution

The fourth proportional to 1,386,530.72, 2,079,790.60 and 439,975.24 is: 659,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,530.72 : 2,079,790.60 = 439,975.24 : x
  2. Step 2: Convert to fraction form
    1,386,530.72/2,079,790.60 = 439,975.24/x
  3. Step 3: Cross multiply
    1,386,530.72x = 2,079,790.60 × 439,975.24
  4. Step 4: Simplify right side
    1,386,530.72x = 915,056,368,384.74
  5. Step 5: Solve for x
    x = 915,056,368,384.74/1,386,530.72
  6. Step 6: Final answer
    x = 659,961.12

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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.