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Finding the Fourth Proportional to 638,670.60, 958,082.28 and 259,510.32

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Solution

The fourth proportional to 638,670.60, 958,082.28 and 259,510.32 is: 389,296.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,670.60 : 958,082.28 = 259,510.32 : x
  2. Step 2: Convert to fraction form
    638,670.60/958,082.28 = 259,510.32/x
  3. Step 3: Cross multiply
    638,670.60x = 958,082.28 × 259,510.32
  4. Step 4: Simplify right side
    638,670.60x = 248,632,239,069.13
  5. Step 5: Solve for x
    x = 248,632,239,069.13/638,670.60
  6. Step 6: Final answer
    x = 389,296.52

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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.