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Finding the Fourth Proportional to 561,904, 775,427.52 and 323,440

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Solution

The fourth proportional to 561,904, 775,427.52 and 323,440 is: 446,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,904 : 775,427.52 = 323,440 : x
  2. Step 2: Convert to fraction form
    561,904/775,427.52 = 323,440/x
  3. Step 3: Cross multiply
    561,904x = 775,427.52 × 323,440
  4. Step 4: Simplify right side
    561,904x = 250,804,277,068.80
  5. Step 5: Solve for x
    x = 250,804,277,068.80/561,904
  6. Step 6: Final answer
    x = 446,347.20

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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.