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Finding the Fourth Proportional to 501,948.72, 692,690.40 and 275,608.80

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Solution

The fourth proportional to 501,948.72, 692,690.40 and 275,608.80 is: 380,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,948.72 : 692,690.40 = 275,608.80 : x
  2. Step 2: Convert to fraction form
    501,948.72/692,690.40 = 275,608.80/x
  3. Step 3: Cross multiply
    501,948.72x = 692,690.40 × 275,608.80
  4. Step 4: Simplify right side
    501,948.72x = 190,911,569,915.52
  5. Step 5: Solve for x
    x = 190,911,569,915.52/501,948.72
  6. Step 6: Final answer
    x = 380,340.78

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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.