Home / 643,573,506.60-965,360,259.90-212,752,002.60

Finding the Fourth Proportional to 643,573,506.60, 965,360,259.90 and 212,752,002.60

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Solution

The fourth proportional to 643,573,506.60, 965,360,259.90 and 212,752,002.60 is: 319,128,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,573,506.60 : 965,360,259.90 = 212,752,002.60 : x
  2. Step 2: Convert to fraction form
    643,573,506.60/965,360,259.90 = 212,752,002.60/x
  3. Step 3: Cross multiply
    643,573,506.60x = 965,360,259.90 × 212,752,002.60
  4. Step 4: Simplify right side
    643,573,506.60x = 205,382,328,524,181,472
  5. Step 5: Solve for x
    x = 205,382,328,524,181,472/643,573,506.60
  6. Step 6: Final answer
    x = 319,128,003.90

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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.