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Finding the Fourth Proportional to 806,440.80, 1,209,661.20 and 565,903.20

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Solution

The fourth proportional to 806,440.80, 1,209,661.20 and 565,903.20 is: 848,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,440.80 : 1,209,661.20 = 565,903.20 : x
  2. Step 2: Convert to fraction form
    806,440.80/1,209,661.20 = 565,903.20/x
  3. Step 3: Cross multiply
    806,440.80x = 1,209,661.20 × 565,903.20
  4. Step 4: Simplify right side
    806,440.80x = 684,551,143,995.84
  5. Step 5: Solve for x
    x = 684,551,143,995.84/806,440.80
  6. Step 6: Final answer
    x = 848,854.80

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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.