Home / 870,678.26-1,305,421.15-443,386.96

Finding the Fourth Proportional to 870,678.26, 1,305,421.15 and 443,386.96

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Solution

The fourth proportional to 870,678.26, 1,305,421.15 and 443,386.96 is: 664,776.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,678.26 : 1,305,421.15 = 443,386.96 : x
  2. Step 2: Convert to fraction form
    870,678.26/1,305,421.15 = 443,386.96/x
  3. Step 3: Cross multiply
    870,678.26x = 1,305,421.15 × 443,386.96
  4. Step 4: Simplify right side
    870,678.26x = 578,806,713,063.12
  5. Step 5: Solve for x
    x = 578,806,713,063.12/870,678.26
  6. Step 6: Final answer
    x = 664,776.81

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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.