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Finding the Fourth Proportional to 768,122.16, 1,059,634.08 and 496,424.40

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Solution

The fourth proportional to 768,122.16, 1,059,634.08 and 496,424.40 is: 684,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,122.16 : 1,059,634.08 = 496,424.40 : x
  2. Step 2: Convert to fraction form
    768,122.16/1,059,634.08 = 496,424.40/x
  3. Step 3: Cross multiply
    768,122.16x = 1,059,634.08 × 496,424.40
  4. Step 4: Simplify right side
    768,122.16x = 526,028,212,383.55
  5. Step 5: Solve for x
    x = 526,028,212,383.55/768,122.16
  6. Step 6: Final answer
    x = 684,823.64

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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.