Home / 391,562,156,296.78-540,355,801,674.20-217,943,569,805.52

Finding the Fourth Proportional to 391,562,156,296.78, 540,355,801,674.20 and 217,943,569,805.52

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Solution

The fourth proportional to 391,562,156,296.78, 540,355,801,674.20 and 217,943,569,805.52 is: 300,762,140,794.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562,156,296.78 : 540,355,801,674.20 = 217,943,569,805.52 : x
  2. Step 2: Convert to fraction form
    391,562,156,296.78/540,355,801,674.20 = 217,943,569,805.52/x
  3. Step 3: Cross multiply
    391,562,156,296.78x = 540,355,801,674.20 × 217,943,569,805.52
  4. Step 4: Simplify right side
    391,562,156,296.78x = 117,767,072,381,998,727,168,000
  5. Step 5: Solve for x
    x = 117,767,072,381,998,727,168,000/391,562,156,296.78
  6. Step 6: Final answer
    x = 300,762,140,794.68

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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.