Home / 870,678.41-1,305,421.38-443,387.11

Finding the Fourth Proportional to 870,678.41, 1,305,421.38 and 443,387.11

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Solution

The fourth proportional to 870,678.41, 1,305,421.38 and 443,387.11 is: 664,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,678.41 : 1,305,421.38 = 443,387.11 : x
  2. Step 2: Convert to fraction form
    870,678.41/1,305,421.38 = 443,387.11/x
  3. Step 3: Cross multiply
    870,678.41x = 1,305,421.38 × 443,387.11
  4. Step 4: Simplify right side
    870,678.41x = 578,807,006,652.51
  5. Step 5: Solve for x
    x = 578,807,006,652.51/870,678.41
  6. Step 6: Final answer
    x = 664,777.03

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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.