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Finding the Fourth Proportional to 478,555.47, 660,435.54 and 263,695.27

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Solution

The fourth proportional to 478,555.47, 660,435.54 and 263,695.27 is: 363,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,555.47 : 660,435.54 = 263,695.27 : x
  2. Step 2: Convert to fraction form
    478,555.47/660,435.54 = 263,695.27/x
  3. Step 3: Cross multiply
    478,555.47x = 660,435.54 × 263,695.27
  4. Step 4: Simplify right side
    478,555.47x = 174,153,728,037.90
  5. Step 5: Solve for x
    x = 174,153,728,037.90/478,555.47
  6. Step 6: Final answer
    x = 363,915.45

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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.