Home / 639,943,509.54-959,915,264.52-179,881,678.82

Finding the Fourth Proportional to 639,943,509.54, 959,915,264.52 and 179,881,678.82

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Solution

The fourth proportional to 639,943,509.54, 959,915,264.52 and 179,881,678.82 is: 269,822,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,943,509.54 : 959,915,264.52 = 179,881,678.82 : x
  2. Step 2: Convert to fraction form
    639,943,509.54/959,915,264.52 = 179,881,678.82/x
  3. Step 3: Cross multiply
    639,943,509.54x = 959,915,264.52 × 179,881,678.82
  4. Step 4: Simplify right side
    639,943,509.54x = 172,671,169,306,801,984
  5. Step 5: Solve for x
    x = 172,671,169,306,801,984/639,943,509.54
  6. Step 6: Final answer
    x = 269,822,518.29

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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.