Home / 391,562,156,296.20-540,355,801,673.40-217,943,569,804.97

Finding the Fourth Proportional to 391,562,156,296.20, 540,355,801,673.40 and 217,943,569,804.97

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Solution

The fourth proportional to 391,562,156,296.20, 540,355,801,673.40 and 217,943,569,804.97 is: 300,762,140,793.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562,156,296.20 : 540,355,801,673.40 = 217,943,569,804.97 : x
  2. Step 2: Convert to fraction form
    391,562,156,296.20/540,355,801,673.40 = 217,943,569,804.97/x
  3. Step 3: Cross multiply
    391,562,156,296.20x = 540,355,801,673.40 × 217,943,569,804.97
  4. Step 4: Simplify right side
    391,562,156,296.20x = 117,767,072,381,527,186,735,104
  5. Step 5: Solve for x
    x = 117,767,072,381,527,186,735,104/391,562,156,296.20
  6. Step 6: Final answer
    x = 300,762,140,793.92

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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.