Home / 621,695,927.76-858,015,612.09-353,836,886.33

Finding the Fourth Proportional to 621,695,927.76, 858,015,612.09 and 353,836,886.33

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Solution

The fourth proportional to 621,695,927.76, 858,015,612.09 and 353,836,886.33 is: 488,337,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,695,927.76 : 858,015,612.09 = 353,836,886.33 : x
  2. Step 2: Convert to fraction form
    621,695,927.76/858,015,612.09 = 353,836,886.33/x
  3. Step 3: Cross multiply
    621,695,927.76x = 858,015,612.09 × 353,836,886.33
  4. Step 4: Simplify right side
    621,695,927.76x = 303,597,572,600,164,608
  5. Step 5: Solve for x
    x = 303,597,572,600,164,608/621,695,927.76
  6. Step 6: Final answer
    x = 488,337,721.13

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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.