Home / 538,456,515.78-743,127,108.56-315,625,420.41

Finding the Fourth Proportional to 538,456,515.78, 743,127,108.56 and 315,625,420.41

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Solution

The fourth proportional to 538,456,515.78, 743,127,108.56 and 315,625,420.41 is: 435,596,560.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,456,515.78 : 743,127,108.56 = 315,625,420.41 : x
  2. Step 2: Convert to fraction form
    538,456,515.78/743,127,108.56 = 315,625,420.41/x
  3. Step 3: Cross multiply
    538,456,515.78x = 743,127,108.56 × 315,625,420.41
  4. Step 4: Simplify right side
    538,456,515.78x = 234,549,806,057,317,696
  5. Step 5: Solve for x
    x = 234,549,806,057,317,696/538,456,515.78
  6. Step 6: Final answer
    x = 435,596,560.14

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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.