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Finding the Fourth Proportional to 660,382.80, 990,574.20 and 565,904.40

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Solution

The fourth proportional to 660,382.80, 990,574.20 and 565,904.40 is: 848,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,382.80 : 990,574.20 = 565,904.40 : x
  2. Step 2: Convert to fraction form
    660,382.80/990,574.20 = 565,904.40/x
  3. Step 3: Cross multiply
    660,382.80x = 990,574.20 × 565,904.40
  4. Step 4: Simplify right side
    660,382.80x = 560,570,298,306.48
  5. Step 5: Solve for x
    x = 560,570,298,306.48/660,382.80
  6. Step 6: Final answer
    x = 848,856.60

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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.