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Finding the Fourth Proportional to 478,640.36, 660,528.06 and 263,788.22

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Solution

The fourth proportional to 478,640.36, 660,528.06 and 263,788.22 is: 364,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,640.36 : 660,528.06 = 263,788.22 : x
  2. Step 2: Convert to fraction form
    478,640.36/660,528.06 = 263,788.22/x
  3. Step 3: Cross multiply
    478,640.36x = 660,528.06 × 263,788.22
  4. Step 4: Simplify right side
    478,640.36x = 174,239,521,207.45
  5. Step 5: Solve for x
    x = 174,239,521,207.45/478,640.36
  6. Step 6: Final answer
    x = 364,030.15

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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.