Home / 657,468,488.19-987,776,044.72-421,580,168.23

Finding the Fourth Proportional to 657,468,488.19, 987,776,044.72 and 421,580,168.23

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Solution

The fourth proportional to 657,468,488.19, 987,776,044.72 and 421,580,168.23 is: 633,379,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,468,488.19 : 987,776,044.72 = 421,580,168.23 : x
  2. Step 2: Convert to fraction form
    657,468,488.19/987,776,044.72 = 421,580,168.23/x
  3. Step 3: Cross multiply
    657,468,488.19x = 987,776,044.72 × 421,580,168.23
  4. Step 4: Simplify right side
    657,468,488.19x = 416,426,791,106,621,632
  5. Step 5: Solve for x
    x = 416,426,791,106,621,632/657,468,488.19
  6. Step 6: Final answer
    x = 633,379,087.50

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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.