Home / 687,744,659.10-1,031,616,988.65-442,856,646.30

Finding the Fourth Proportional to 687,744,659.10, 1,031,616,988.65 and 442,856,646.30

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Solution

The fourth proportional to 687,744,659.10, 1,031,616,988.65 and 442,856,646.30 is: 664,284,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744,659.10 : 1,031,616,988.65 = 442,856,646.30 : x
  2. Step 2: Convert to fraction form
    687,744,659.10/1,031,616,988.65 = 442,856,646.30/x
  3. Step 3: Cross multiply
    687,744,659.10x = 1,031,616,988.65 × 442,856,646.30
  4. Step 4: Simplify right side
    687,744,659.10x = 456,858,439,859,644,160
  5. Step 5: Solve for x
    x = 456,858,439,859,644,160/687,744,659.10
  6. Step 6: Final answer
    x = 664,284,969.45

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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.