Home / 1,384,340.40-2,076,121.80-438,001.20

Finding the Fourth Proportional to 1,384,340.40, 2,076,121.80 and 438,001.20

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Solution

The fourth proportional to 1,384,340.40, 2,076,121.80 and 438,001.20 is: 656,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,340.40 : 2,076,121.80 = 438,001.20 : x
  2. Step 2: Convert to fraction form
    1,384,340.40/2,076,121.80 = 438,001.20/x
  3. Step 3: Cross multiply
    1,384,340.40x = 2,076,121.80 × 438,001.20
  4. Step 4: Simplify right side
    1,384,340.40x = 909,343,839,746.16
  5. Step 5: Solve for x
    x = 909,343,839,746.16/1,384,340.40
  6. Step 6: Final answer
    x = 656,878.78

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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.