Home / 1,385,165.80-2,077,943.10-438,437.80

Finding the Fourth Proportional to 1,385,165.80, 2,077,943.10 and 438,437.80

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Solution

The fourth proportional to 1,385,165.80, 2,077,943.10 and 438,437.80 is: 657,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,165.80 : 2,077,943.10 = 438,437.80 : x
  2. Step 2: Convert to fraction form
    1,385,165.80/2,077,943.10 = 438,437.80/x
  3. Step 3: Cross multiply
    1,385,165.80x = 2,077,943.10 × 438,437.80
  4. Step 4: Simplify right side
    1,385,165.80x = 911,048,801,289.18
  5. Step 5: Solve for x
    x = 911,048,801,289.18/1,385,165.80
  6. Step 6: Final answer
    x = 657,718.23

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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.