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Finding the Fourth Proportional to 478,640.42, 660,528.30 and 263,788.32

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Solution

The fourth proportional to 478,640.42, 660,528.30 and 263,788.32 is: 364,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,640.42 : 660,528.30 = 263,788.32 : x
  2. Step 2: Convert to fraction form
    478,640.42/660,528.30 = 263,788.32/x
  3. Step 3: Cross multiply
    478,640.42x = 660,528.30 × 263,788.32
  4. Step 4: Simplify right side
    478,640.42x = 174,239,650,569.46
  5. Step 5: Solve for x
    x = 174,239,650,569.46/478,640.42
  6. Step 6: Final answer
    x = 364,030.37

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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.