Home / 783,075.36-1,080,387-438,861

Finding the Fourth Proportional to 783,075.36, 1,080,387 and 438,861

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Solution

The fourth proportional to 783,075.36, 1,080,387 and 438,861 is: 605,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,075.36 : 1,080,387 = 438,861 : x
  2. Step 2: Convert to fraction form
    783,075.36/1,080,387 = 438,861/x
  3. Step 3: Cross multiply
    783,075.36x = 1,080,387 × 438,861
  4. Step 4: Simplify right side
    783,075.36x = 474,139,719,207
  5. Step 5: Solve for x
    x = 474,139,719,207/783,075.36
  6. Step 6: Final answer
    x = 605,484.15

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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.