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Finding the Fourth Proportional to 612,475.20, 917,400.60 and 494,377.20

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Solution

The fourth proportional to 612,475.20, 917,400.60 and 494,377.20 is: 740,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,475.20 : 917,400.60 = 494,377.20 : x
  2. Step 2: Convert to fraction form
    612,475.20/917,400.60 = 494,377.20/x
  3. Step 3: Cross multiply
    612,475.20x = 917,400.60 × 494,377.20
  4. Step 4: Simplify right side
    612,475.20x = 453,541,939,906.32
  5. Step 5: Solve for x
    x = 453,541,939,906.32/612,475.20
  6. Step 6: Final answer
    x = 740,506.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.