Home / 675,139,772.40-1,012,709,658.60-647,929,993.20

Finding the Fourth Proportional to 675,139,772.40, 1,012,709,658.60 and 647,929,993.20

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Solution

The fourth proportional to 675,139,772.40, 1,012,709,658.60 and 647,929,993.20 is: 971,894,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,139,772.40 : 1,012,709,658.60 = 647,929,993.20 : x
  2. Step 2: Convert to fraction form
    675,139,772.40/1,012,709,658.60 = 647,929,993.20/x
  3. Step 3: Cross multiply
    675,139,772.40x = 1,012,709,658.60 × 647,929,993.20
  4. Step 4: Simplify right side
    675,139,772.40x = 656,164,962,210,272,384
  5. Step 5: Solve for x
    x = 656,164,962,210,272,384/675,139,772.40
  6. Step 6: Final answer
    x = 971,894,989.80

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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.