Home / 870,680.16-1,305,424.01-443,388.87

Finding the Fourth Proportional to 870,680.16, 1,305,424.01 and 443,388.87

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Solution

The fourth proportional to 870,680.16, 1,305,424.01 and 443,388.87 is: 664,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,680.16 : 1,305,424.01 = 443,388.87 : x
  2. Step 2: Convert to fraction form
    870,680.16/1,305,424.01 = 443,388.87/x
  3. Step 3: Cross multiply
    870,680.16x = 1,305,424.01 × 443,388.87
  4. Step 4: Simplify right side
    870,680.16x = 578,810,477,773.24
  5. Step 5: Solve for x
    x = 578,810,477,773.24/870,680.16
  6. Step 6: Final answer
    x = 664,779.68

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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.