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Finding the Fourth Proportional to 501,905.72, 692,631.06 and 275,565.80

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Solution

The fourth proportional to 501,905.72, 692,631.06 and 275,565.80 is: 380,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,905.72 : 692,631.06 = 275,565.80 : x
  2. Step 2: Convert to fraction form
    501,905.72/692,631.06 = 275,565.80/x
  3. Step 3: Cross multiply
    501,905.72x = 692,631.06 × 275,565.80
  4. Step 4: Simplify right side
    501,905.72x = 190,865,432,153.75
  5. Step 5: Solve for x
    x = 190,865,432,153.75/501,905.72
  6. Step 6: Final answer
    x = 380,281.44

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1.5x scale

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.