Home / 811,498.75-1,119,901.25-448,916.36

Finding the Fourth Proportional to 811,498.75, 1,119,901.25 and 448,916.36

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Solution

The fourth proportional to 811,498.75, 1,119,901.25 and 448,916.36 is: 619,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,498.75 : 1,119,901.25 = 448,916.36 : x
  2. Step 2: Convert to fraction form
    811,498.75/1,119,901.25 = 448,916.36/x
  3. Step 3: Cross multiply
    811,498.75x = 1,119,901.25 × 448,916.36
  4. Step 4: Simplify right side
    811,498.75x = 502,741,989,348.55
  5. Step 5: Solve for x
    x = 502,741,989,348.55/811,498.75
  6. Step 6: Final answer
    x = 619,522.81

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Double scale
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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.