Home / 429,031,871.72-643,553,786.29-122,323,984.59

Finding the Fourth Proportional to 429,031,871.72, 643,553,786.29 and 122,323,984.59

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Solution

The fourth proportional to 429,031,871.72, 643,553,786.29 and 122,323,984.59 is: 183,487,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,031,871.72 : 643,553,786.29 = 122,323,984.59 : x
  2. Step 2: Convert to fraction form
    429,031,871.72/643,553,786.29 = 122,323,984.59/x
  3. Step 3: Cross multiply
    429,031,871.72x = 643,553,786.29 × 122,323,984.59
  4. Step 4: Simplify right side
    429,031,871.72x = 78,722,063,436,668,304
  5. Step 5: Solve for x
    x = 78,722,063,436,668,304/429,031,871.72
  6. Step 6: Final answer
    x = 183,487,681.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.