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Finding the Fourth Proportional to 561,030.44, 773,709.18 and 438,539

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Solution

The fourth proportional to 561,030.44, 773,709.18 and 438,539 is: 604,782.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,030.44 : 773,709.18 = 438,539 : x
  2. Step 2: Convert to fraction form
    561,030.44/773,709.18 = 438,539/x
  3. Step 3: Cross multiply
    561,030.44x = 773,709.18 × 438,539
  4. Step 4: Simplify right side
    561,030.44x = 339,301,650,088.02
  5. Step 5: Solve for x
    x = 339,301,650,088.02/561,030.44
  6. Step 6: Final answer
    x = 604,782.96

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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.