Home / 1,385,882.40-2,078,881.92-439,232.16

Finding the Fourth Proportional to 1,385,882.40, 2,078,881.92 and 439,232.16

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Solution

The fourth proportional to 1,385,882.40, 2,078,881.92 and 439,232.16 is: 658,866.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,882.40 : 2,078,881.92 = 439,232.16 : x
  2. Step 2: Convert to fraction form
    1,385,882.40/2,078,881.92 = 439,232.16/x
  3. Step 3: Cross multiply
    1,385,882.40x = 2,078,881.92 × 439,232.16
  4. Step 4: Simplify right side
    1,385,882.40x = 913,111,796,106.55
  5. Step 5: Solve for x
    x = 913,111,796,106.55/1,385,882.40
  6. Step 6: Final answer
    x = 658,866.72

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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.