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Finding the Fourth Proportional to 783,073.36, 1,080,384.24 and 438,859

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Solution

The fourth proportional to 783,073.36, 1,080,384.24 and 438,859 is: 605,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,073.36 : 1,080,384.24 = 438,859 : x
  2. Step 2: Convert to fraction form
    783,073.36/1,080,384.24 = 438,859/x
  3. Step 3: Cross multiply
    783,073.36x = 1,080,384.24 × 438,859
  4. Step 4: Simplify right side
    783,073.36x = 474,136,347,182.16
  5. Step 5: Solve for x
    x = 474,136,347,182.16/783,073.36
  6. Step 6: Final answer
    x = 605,481.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.