Home / 811,137.60-1,119,348.72-448,551.36

Finding the Fourth Proportional to 811,137.60, 1,119,348.72 and 448,551.36

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Solution

The fourth proportional to 811,137.60, 1,119,348.72 and 448,551.36 is: 618,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,137.60 : 1,119,348.72 = 448,551.36 : x
  2. Step 2: Convert to fraction form
    811,137.60/1,119,348.72 = 448,551.36/x
  3. Step 3: Cross multiply
    811,137.60x = 1,119,348.72 × 448,551.36
  4. Step 4: Simplify right side
    811,137.60x = 502,085,390,670.26
  5. Step 5: Solve for x
    x = 502,085,390,670.26/811,137.60
  6. Step 6: Final answer
    x = 618,989.17

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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.