Home / 870,864.69-1,306,379.49-338,426.79

Finding the Fourth Proportional to 870,864.69, 1,306,379.49 and 338,426.79

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Solution

The fourth proportional to 870,864.69, 1,306,379.49 and 338,426.79 is: 507,672.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,864.69 : 1,306,379.49 = 338,426.79 : x
  2. Step 2: Convert to fraction form
    870,864.69/1,306,379.49 = 338,426.79/x
  3. Step 3: Cross multiply
    870,864.69x = 1,306,379.49 × 338,426.79
  4. Step 4: Simplify right side
    870,864.69x = 442,113,817,322.54
  5. Step 5: Solve for x
    x = 442,113,817,322.54/870,864.69
  6. Step 6: Final answer
    x = 507,672.23

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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.