Home / 808,570.80-1,212,856.20-721,479.60

Finding the Fourth Proportional to 808,570.80, 1,212,856.20 and 721,479.60

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Solution

The fourth proportional to 808,570.80, 1,212,856.20 and 721,479.60 is: 1,082,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,570.80 : 1,212,856.20 = 721,479.60 : x
  2. Step 2: Convert to fraction form
    808,570.80/1,212,856.20 = 721,479.60/x
  3. Step 3: Cross multiply
    808,570.80x = 1,212,856.20 × 721,479.60
  4. Step 4: Simplify right side
    808,570.80x = 875,051,006,033.52
  5. Step 5: Solve for x
    x = 875,051,006,033.52/808,570.80
  6. Step 6: Final answer
    x = 1,082,219.40

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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.