Home / 391,562,156,296.95-540,355,801,674.43-217,943,569,805.71

Finding the Fourth Proportional to 391,562,156,296.95, 540,355,801,674.43 and 217,943,569,805.71

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Solution

The fourth proportional to 391,562,156,296.95, 540,355,801,674.43 and 217,943,569,805.71 is: 300,762,140,794.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562,156,296.95 : 540,355,801,674.43 = 217,943,569,805.71 : x
  2. Step 2: Convert to fraction form
    391,562,156,296.95/540,355,801,674.43 = 217,943,569,805.71/x
  3. Step 3: Cross multiply
    391,562,156,296.95x = 540,355,801,674.43 × 217,943,569,805.71
  4. Step 4: Simplify right side
    391,562,156,296.95x = 117,767,072,382,151,517,274,112
  5. Step 5: Solve for x
    x = 117,767,072,382,151,517,274,112/391,562,156,296.95
  6. Step 6: Final answer
    x = 300,762,140,794.94

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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.