Home / 687,744,009.60-1,031,616,014.40-442,855,996.80

Finding the Fourth Proportional to 687,744,009.60, 1,031,616,014.40 and 442,855,996.80

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Solution

The fourth proportional to 687,744,009.60, 1,031,616,014.40 and 442,855,996.80 is: 664,283,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744,009.60 : 1,031,616,014.40 = 442,855,996.80 : x
  2. Step 2: Convert to fraction form
    687,744,009.60/1,031,616,014.40 = 442,855,996.80/x
  3. Step 3: Cross multiply
    687,744,009.60x = 1,031,616,014.40 × 442,855,996.80
  4. Step 4: Simplify right side
    687,744,009.60x = 456,857,338,371,955,136
  5. Step 5: Solve for x
    x = 456,857,338,371,955,136/687,744,009.60
  6. Step 6: Final answer
    x = 664,283,995.20

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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.