Home / 492,276,717.12-679,551,045.84-306,729,408

Finding the Fourth Proportional to 492,276,717.12, 679,551,045.84 and 306,729,408

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Solution

The fourth proportional to 492,276,717.12, 679,551,045.84 and 306,729,408 is: 423,416,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,276,717.12 : 679,551,045.84 = 306,729,408 : x
  2. Step 2: Convert to fraction form
    492,276,717.12/679,551,045.84 = 306,729,408/x
  3. Step 3: Cross multiply
    492,276,717.12x = 679,551,045.84 × 306,729,408
  4. Step 4: Simplify right side
    492,276,717.12x = 208,438,289,996,284,064
  5. Step 5: Solve for x
    x = 208,438,289,996,284,064/492,276,717.12
  6. Step 6: Final answer
    x = 423,416,917.25

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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.