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Finding the Fourth Proportional to 559,687.51, 772,389.41 and 318,011.01

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Solution

The fourth proportional to 559,687.51, 772,389.41 and 318,011.01 is: 438,866.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,687.51 : 772,389.41 = 318,011.01 : x
  2. Step 2: Convert to fraction form
    559,687.51/772,389.41 = 318,011.01/x
  3. Step 3: Cross multiply
    559,687.51x = 772,389.41 × 318,011.01
  4. Step 4: Simplify right side
    559,687.51x = 245,628,336,245.58
  5. Step 5: Solve for x
    x = 245,628,336,245.58/559,687.51
  6. Step 6: Final answer
    x = 438,866.93

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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.