Home / 687,744,012.60-1,031,616,018.90-442,855,999.80

Finding the Fourth Proportional to 687,744,012.60, 1,031,616,018.90 and 442,855,999.80

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Solution

The fourth proportional to 687,744,012.60, 1,031,616,018.90 and 442,855,999.80 is: 664,283,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744,012.60 : 1,031,616,018.90 = 442,855,999.80 : x
  2. Step 2: Convert to fraction form
    687,744,012.60/1,031,616,018.90 = 442,855,999.80/x
  3. Step 3: Cross multiply
    687,744,012.60x = 1,031,616,018.90 × 442,855,999.80
  4. Step 4: Simplify right side
    687,744,012.60x = 456,857,343,459,655,168
  5. Step 5: Solve for x
    x = 456,857,343,459,655,168/687,744,012.60
  6. Step 6: Final answer
    x = 664,283,999.70

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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.