Home / 870,682.16-1,305,427.01-443,390.87

Finding the Fourth Proportional to 870,682.16, 1,305,427.01 and 443,390.87

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Solution

The fourth proportional to 870,682.16, 1,305,427.01 and 443,390.87 is: 664,782.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,682.16 : 1,305,427.01 = 443,390.87 : x
  2. Step 2: Convert to fraction form
    870,682.16/1,305,427.01 = 443,390.87/x
  3. Step 3: Cross multiply
    870,682.16x = 1,305,427.01 × 443,390.87
  4. Step 4: Simplify right side
    870,682.16x = 578,814,417,685.40
  5. Step 5: Solve for x
    x = 578,814,417,685.40/870,682.16
  6. Step 6: Final answer
    x = 664,782.68

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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.