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Finding the Fourth Proportional to 666,512.78, 918,830.67 and 475,194.14

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Solution

The fourth proportional to 666,512.78, 918,830.67 and 475,194.14 is: 655,085.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,512.78 : 918,830.67 = 475,194.14 : x
  2. Step 2: Convert to fraction form
    666,512.78/918,830.67 = 475,194.14/x
  3. Step 3: Cross multiply
    666,512.78x = 918,830.67 × 475,194.14
  4. Step 4: Simplify right side
    666,512.78x = 436,622,950,036.27
  5. Step 5: Solve for x
    x = 436,622,950,036.27/666,512.78
  6. Step 6: Final answer
    x = 655,085.64

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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.