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Finding the Fourth Proportional to 478,066.64, 660,324.40 and 347,035.16

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Solution

The fourth proportional to 478,066.64, 660,324.40 and 347,035.16 is: 479,338.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,066.64 : 660,324.40 = 347,035.16 : x
  2. Step 2: Convert to fraction form
    478,066.64/660,324.40 = 347,035.16/x
  3. Step 3: Cross multiply
    478,066.64x = 660,324.40 × 347,035.16
  4. Step 4: Simplify right side
    478,066.64x = 229,155,786,005.73
  5. Step 5: Solve for x
    x = 229,155,786,005.73/478,066.64
  6. Step 6: Final answer
    x = 479,338.58

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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.