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Finding the Fourth Proportional to 559,509.80, 772,123.64 and 304,860.98

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Solution

The fourth proportional to 559,509.80, 772,123.64 and 304,860.98 is: 420,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,509.80 : 772,123.64 = 304,860.98 : x
  2. Step 2: Convert to fraction form
    559,509.80/772,123.64 = 304,860.98/x
  3. Step 3: Cross multiply
    559,509.80x = 772,123.64 × 304,860.98
  4. Step 4: Simplify right side
    559,509.80x = 235,390,369,571.57
  5. Step 5: Solve for x
    x = 235,390,369,571.57/559,509.80
  6. Step 6: Final answer
    x = 420,708.22

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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.