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Finding the Fourth Proportional to 478,666.12, 660,546.28 and 263,806.13

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Solution

The fourth proportional to 478,666.12, 660,546.28 and 263,806.13 is: 364,045.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,666.12 : 660,546.28 = 263,806.13 : x
  2. Step 2: Convert to fraction form
    478,666.12/660,546.28 = 263,806.13/x
  3. Step 3: Cross multiply
    478,666.12x = 660,546.28 × 263,806.13
  4. Step 4: Simplify right side
    478,666.12x = 174,256,157,812.70
  5. Step 5: Solve for x
    x = 174,256,157,812.70/478,666.12
  6. Step 6: Final answer
    x = 364,045.31

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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.