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Finding the Fourth Proportional to 891,769,551.10, 1,337,654,326.65 and 687,696,207.10

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Solution

The fourth proportional to 891,769,551.10, 1,337,654,326.65 and 687,696,207.10 is: 1,031,544,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,769,551.10 : 1,337,654,326.65 = 687,696,207.10 : x
  2. Step 2: Convert to fraction form
    891,769,551.10/1,337,654,326.65 = 687,696,207.10/x
  3. Step 3: Cross multiply
    891,769,551.10x = 1,337,654,326.65 × 687,696,207.10
  4. Step 4: Simplify right side
    891,769,551.10x = 919,899,806,848,109,568
  5. Step 5: Solve for x
    x = 919,899,806,848,109,568/891,769,551.10
  6. Step 6: Final answer
    x = 1,031,544,310.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.