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Finding the Fourth Proportional to 906,171.84, 1,359,268.92 and 393,718.32

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Solution

The fourth proportional to 906,171.84, 1,359,268.92 and 393,718.32 is: 590,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,171.84 : 1,359,268.92 = 393,718.32 : x
  2. Step 2: Convert to fraction form
    906,171.84/1,359,268.92 = 393,718.32/x
  3. Step 3: Cross multiply
    906,171.84x = 1,359,268.92 × 393,718.32
  4. Step 4: Simplify right side
    906,171.84x = 535,169,075,610.61
  5. Step 5: Solve for x
    x = 535,169,075,610.61/906,171.84
  6. Step 6: Final answer
    x = 590,582.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.