Home / 870,239.81-1,305,626.96-415,411.43

Finding the Fourth Proportional to 870,239.81, 1,305,626.96 and 415,411.43

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Solution

The fourth proportional to 870,239.81, 1,305,626.96 and 415,411.43 is: 623,244.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,239.81 : 1,305,626.96 = 415,411.43 : x
  2. Step 2: Convert to fraction form
    870,239.81/1,305,626.96 = 415,411.43/x
  3. Step 3: Cross multiply
    870,239.81x = 1,305,626.96 × 415,411.43
  4. Step 4: Simplify right side
    870,239.81x = 542,372,362,500.15
  5. Step 5: Solve for x
    x = 542,372,362,500.15/870,239.81
  6. Step 6: Final answer
    x = 623,244.71

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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.