Home / 640,094,721.77-883,472,819.95-389,145,790.22

Finding the Fourth Proportional to 640,094,721.77, 883,472,819.95 and 389,145,790.22

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Solution

The fourth proportional to 640,094,721.77, 883,472,819.95 and 389,145,790.22 is: 537,107,582.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,094,721.77 : 883,472,819.95 = 389,145,790.22 : x
  2. Step 2: Convert to fraction form
    640,094,721.77/883,472,819.95 = 389,145,790.22/x
  3. Step 3: Cross multiply
    640,094,721.77x = 883,472,819.95 × 389,145,790.22
  4. Step 4: Simplify right side
    640,094,721.77x = 343,799,728,653,403,584
  5. Step 5: Solve for x
    x = 343,799,728,653,403,584/640,094,721.77
  6. Step 6: Final answer
    x = 537,107,582.61

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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.