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Finding the Fourth Proportional to 811,000, 1,119,134.82 and 448,402.08

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Solution

The fourth proportional to 811,000, 1,119,134.82 and 448,402.08 is: 618,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,000 : 1,119,134.82 = 448,402.08 : x
  2. Step 2: Convert to fraction form
    811,000/1,119,134.82 = 448,402.08/x
  3. Step 3: Cross multiply
    811,000x = 1,119,134.82 × 448,402.08
  4. Step 4: Simplify right side
    811,000x = 501,822,381,088.43
  5. Step 5: Solve for x
    x = 501,822,381,088.43/811,000
  6. Step 6: Final answer
    x = 618,769.89

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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.