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Finding the Fourth Proportional to 912,378, 1,259,030.84 and 504,455.34

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Solution

The fourth proportional to 912,378, 1,259,030.84 and 504,455.34 is: 696,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,378 : 1,259,030.84 = 504,455.34 : x
  2. Step 2: Convert to fraction form
    912,378/1,259,030.84 = 504,455.34/x
  3. Step 3: Cross multiply
    912,378x = 1,259,030.84 × 504,455.34
  4. Step 4: Simplify right side
    912,378x = 635,124,827,940.41
  5. Step 5: Solve for x
    x = 635,124,827,940.41/912,378
  6. Step 6: Final answer
    x = 696,120.28

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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.