Home / 499,472,346.90-749,208,520.35-212,220,686.10

Finding the Fourth Proportional to 499,472,346.90, 749,208,520.35 and 212,220,686.10

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Solution

The fourth proportional to 499,472,346.90, 749,208,520.35 and 212,220,686.10 is: 318,331,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,472,346.90 : 749,208,520.35 = 212,220,686.10 : x
  2. Step 2: Convert to fraction form
    499,472,346.90/749,208,520.35 = 212,220,686.10/x
  3. Step 3: Cross multiply
    499,472,346.90x = 749,208,520.35 × 212,220,686.10
  4. Step 4: Simplify right side
    499,472,346.90x = 158,997,546,220,642,816
  5. Step 5: Solve for x
    x = 158,997,546,220,642,816/499,472,346.90
  6. Step 6: Final answer
    x = 318,331,029.15

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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.