Home / 640,578,165.12-883,974,176.64-347,216,434.56

Finding the Fourth Proportional to 640,578,165.12, 883,974,176.64 and 347,216,434.56

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Solution

The fourth proportional to 640,578,165.12, 883,974,176.64 and 347,216,434.56 is: 479,145,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,578,165.12 : 883,974,176.64 = 347,216,434.56 : x
  2. Step 2: Convert to fraction form
    640,578,165.12/883,974,176.64 = 347,216,434.56/x
  3. Step 3: Cross multiply
    640,578,165.12x = 883,974,176.64 × 347,216,434.56
  4. Step 4: Simplify right side
    640,578,165.12x = 306,930,361,856,052,416
  5. Step 5: Solve for x
    x = 306,930,361,856,052,416/640,578,165.12
  6. Step 6: Final answer
    x = 479,145,838.20

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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.