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Finding the Fourth Proportional to 559,642.87, 772,284.63 and 304,988.59

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Solution

The fourth proportional to 559,642.87, 772,284.63 and 304,988.59 is: 420,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,642.87 : 772,284.63 = 304,988.59 : x
  2. Step 2: Convert to fraction form
    559,642.87/772,284.63 = 304,988.59/x
  3. Step 3: Cross multiply
    559,642.87x = 772,284.63 × 304,988.59
  4. Step 4: Simplify right side
    559,642.87x = 235,538,000,382.37
  5. Step 5: Solve for x
    x = 235,538,000,382.37/559,642.87
  6. Step 6: Final answer
    x = 420,871.98

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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.