Home / 811,398.34-1,119,715.88-448,821.90

Finding the Fourth Proportional to 811,398.34, 1,119,715.88 and 448,821.90

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Solution

The fourth proportional to 811,398.34, 1,119,715.88 and 448,821.90 is: 619,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,398.34 : 1,119,715.88 = 448,821.90 : x
  2. Step 2: Convert to fraction form
    811,398.34/1,119,715.88 = 448,821.90/x
  3. Step 3: Cross multiply
    811,398.34x = 1,119,715.88 × 448,821.90
  4. Step 4: Simplify right side
    811,398.34x = 502,553,006,477.66
  5. Step 5: Solve for x
    x = 502,553,006,477.66/811,398.34
  6. Step 6: Final answer
    x = 619,366.57

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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.