Home / 499,949,085.67-689,929,679.12-299,005,929.02

Finding the Fourth Proportional to 499,949,085.67, 689,929,679.12 and 299,005,929.02

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Solution

The fourth proportional to 499,949,085.67, 689,929,679.12 and 299,005,929.02 is: 412,628,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,949,085.67 : 689,929,679.12 = 299,005,929.02 : x
  2. Step 2: Convert to fraction form
    499,949,085.67/689,929,679.12 = 299,005,929.02/x
  3. Step 3: Cross multiply
    499,949,085.67x = 689,929,679.12 × 299,005,929.02
  4. Step 4: Simplify right side
    499,949,085.67x = 206,293,064,658,801,408
  5. Step 5: Solve for x
    x = 206,293,064,658,801,408/499,949,085.67
  6. Step 6: Final answer
    x = 412,628,146.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.