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Finding the Fourth Proportional to 538,579.76, 804,574.04 and 387,530.96

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Solution

The fourth proportional to 538,579.76, 804,574.04 and 387,530.96 is: 578,925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,579.76 : 804,574.04 = 387,530.96 : x
  2. Step 2: Convert to fraction form
    538,579.76/804,574.04 = 387,530.96/x
  3. Step 3: Cross multiply
    538,579.76x = 804,574.04 × 387,530.96
  4. Step 4: Simplify right side
    538,579.76x = 311,797,344,151.75
  5. Step 5: Solve for x
    x = 311,797,344,151.75/538,579.76
  6. Step 6: Final answer
    x = 578,925.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.