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Finding the Fourth Proportional to 660,214.80, 990,322.20 and 584,107.20

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Solution

The fourth proportional to 660,214.80, 990,322.20 and 584,107.20 is: 876,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,214.80 : 990,322.20 = 584,107.20 : x
  2. Step 2: Convert to fraction form
    660,214.80/990,322.20 = 584,107.20/x
  3. Step 3: Cross multiply
    660,214.80x = 990,322.20 × 584,107.20
  4. Step 4: Simplify right side
    660,214.80x = 578,454,327,339.84
  5. Step 5: Solve for x
    x = 578,454,327,339.84/660,214.80
  6. Step 6: Final answer
    x = 876,160.80

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Similar ratio
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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.