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Finding the Fourth Proportional to 493,460.80, 740,018.40 and 256,724.80

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Solution

The fourth proportional to 493,460.80, 740,018.40 and 256,724.80 is: 384,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,460.80 : 740,018.40 = 256,724.80 : x
  2. Step 2: Convert to fraction form
    493,460.80/740,018.40 = 256,724.80/x
  3. Step 3: Cross multiply
    493,460.80x = 740,018.40 × 256,724.80
  4. Step 4: Simplify right side
    493,460.80x = 189,981,075,736.32
  5. Step 5: Solve for x
    x = 189,981,075,736.32/493,460.80
  6. Step 6: Final answer
    x = 384,997.30

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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.