Home / 621,617,684.28-857,835,145.40-343,161,495.96

Finding the Fourth Proportional to 621,617,684.28, 857,835,145.40 and 343,161,495.96

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Solution

The fourth proportional to 621,617,684.28, 857,835,145.40 and 343,161,495.96 is: 473,564,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,617,684.28 : 857,835,145.40 = 343,161,495.96 : x
  2. Step 2: Convert to fraction form
    621,617,684.28/857,835,145.40 = 343,161,495.96/x
  3. Step 3: Cross multiply
    621,617,684.28x = 857,835,145.40 × 343,161,495.96
  4. Step 4: Simplify right side
    621,617,684.28x = 294,375,991,780,812,288
  5. Step 5: Solve for x
    x = 294,375,991,780,812,288/621,617,684.28
  6. Step 6: Final answer
    x = 473,564,377.63

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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.