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Finding the Fourth Proportional to 559,725.96, 772,442.64 and 318,049.50

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Solution

The fourth proportional to 559,725.96, 772,442.64 and 318,049.50 is: 438,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,725.96 : 772,442.64 = 318,049.50 : x
  2. Step 2: Convert to fraction form
    559,725.96/772,442.64 = 318,049.50/x
  3. Step 3: Cross multiply
    559,725.96x = 772,442.64 × 318,049.50
  4. Step 4: Simplify right side
    559,725.96x = 245,674,995,430.68
  5. Step 5: Solve for x
    x = 245,674,995,430.68/559,725.96
  6. Step 6: Final answer
    x = 438,920.14

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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.