Home / 806,885.80-1,210,328.70-215,909.80

Finding the Fourth Proportional to 806,885.80, 1,210,328.70 and 215,909.80

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Solution

The fourth proportional to 806,885.80, 1,210,328.70 and 215,909.80 is: 323,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,885.80 : 1,210,328.70 = 215,909.80 : x
  2. Step 2: Convert to fraction form
    806,885.80/1,210,328.70 = 215,909.80/x
  3. Step 3: Cross multiply
    806,885.80x = 1,210,328.70 × 215,909.80
  4. Step 4: Simplify right side
    806,885.80x = 261,321,827,551.26
  5. Step 5: Solve for x
    x = 261,321,827,551.26/806,885.80
  6. Step 6: Final answer
    x = 323,864.70

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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.