Home / 870,864.20-1,306,378.74-338,426.29

Finding the Fourth Proportional to 870,864.20, 1,306,378.74 and 338,426.29

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Solution

The fourth proportional to 870,864.20, 1,306,378.74 and 338,426.29 is: 507,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,864.20 : 1,306,378.74 = 338,426.29 : x
  2. Step 2: Convert to fraction form
    870,864.20/1,306,378.74 = 338,426.29/x
  3. Step 3: Cross multiply
    870,864.20x = 1,306,378.74 × 338,426.29
  4. Step 4: Simplify right side
    870,864.20x = 442,112,903,781.18
  5. Step 5: Solve for x
    x = 442,112,903,781.18/870,864.20
  6. Step 6: Final answer
    x = 507,671.47

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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.