Home / 870,872.45-1,306,391.12-338,434.54

Finding the Fourth Proportional to 870,872.45, 1,306,391.12 and 338,434.54

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Solution

The fourth proportional to 870,872.45, 1,306,391.12 and 338,434.54 is: 507,683.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,872.45 : 1,306,391.12 = 338,434.54 : x
  2. Step 2: Convert to fraction form
    870,872.45/1,306,391.12 = 338,434.54/x
  3. Step 3: Cross multiply
    870,872.45x = 1,306,391.12 × 338,434.54
  4. Step 4: Simplify right side
    870,872.45x = 442,127,869,533.16
  5. Step 5: Solve for x
    x = 442,127,869,533.16/870,872.45
  6. Step 6: Final answer
    x = 507,683.84

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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.