Home / 670,008,472.20-1,005,044,201.10-209,961,649.80

Finding the Fourth Proportional to 670,008,472.20, 1,005,044,201.10 and 209,961,649.80

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Solution

The fourth proportional to 670,008,472.20, 1,005,044,201.10 and 209,961,649.80 is: 314,952,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,008,472.20 : 1,005,044,201.10 = 209,961,649.80 : x
  2. Step 2: Convert to fraction form
    670,008,472.20/1,005,044,201.10 = 209,961,649.80/x
  3. Step 3: Cross multiply
    670,008,472.20x = 1,005,044,201.10 × 209,961,649.80
  4. Step 4: Simplify right side
    670,008,472.20x = 211,020,738,584,878,976
  5. Step 5: Solve for x
    x = 211,020,738,584,878,976/670,008,472.20
  6. Step 6: Final answer
    x = 314,952,343.65

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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.