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Finding the Fourth Proportional to 559,491.37, 772,099.80 and 317,775.93

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Solution

The fourth proportional to 559,491.37, 772,099.80 and 317,775.93 is: 438,531.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,491.37 : 772,099.80 = 317,775.93 : x
  2. Step 2: Convert to fraction form
    559,491.37/772,099.80 = 317,775.93/x
  3. Step 3: Cross multiply
    559,491.37x = 772,099.80 × 317,775.93
  4. Step 4: Simplify right side
    559,491.37x = 245,354,731,997.81
  5. Step 5: Solve for x
    x = 245,354,731,997.81/559,491.37
  6. Step 6: Final answer
    x = 438,531.75

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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.