Home / 644,981,187.69-889,793,357.63-409,905,937.89

Finding the Fourth Proportional to 644,981,187.69, 889,793,357.63 and 409,905,937.89

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Solution

The fourth proportional to 644,981,187.69, 889,793,357.63 and 409,905,937.89 is: 565,491,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,981,187.69 : 889,793,357.63 = 409,905,937.89 : x
  2. Step 2: Convert to fraction form
    644,981,187.69/889,793,357.63 = 409,905,937.89/x
  3. Step 3: Cross multiply
    644,981,187.69x = 889,793,357.63 × 409,905,937.89
  4. Step 4: Simplify right side
    644,981,187.69x = 364,731,580,785,567,808
  5. Step 5: Solve for x
    x = 364,731,580,785,567,808/644,981,187.69
  6. Step 6: Final answer
    x = 565,491,812.39

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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.