Home / 538,495,449.69-743,182,768.28-312,484,221.21

Finding the Fourth Proportional to 538,495,449.69, 743,182,768.28 and 312,484,221.21

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Solution

The fourth proportional to 538,495,449.69, 743,182,768.28 and 312,484,221.21 is: 431,262,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,495,449.69 : 743,182,768.28 = 312,484,221.21 : x
  2. Step 2: Convert to fraction form
    538,495,449.69/743,182,768.28 = 312,484,221.21/x
  3. Step 3: Cross multiply
    538,495,449.69x = 743,182,768.28 × 312,484,221.21
  4. Step 4: Simplify right side
    538,495,449.69x = 232,232,888,561,105,248
  5. Step 5: Solve for x
    x = 232,232,888,561,105,248/538,495,449.69
  6. Step 6: Final answer
    x = 431,262,490.14

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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.