Home / 870,152.40-1,305,228.60-811,103.40

Finding the Fourth Proportional to 870,152.40, 1,305,228.60 and 811,103.40

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Solution

The fourth proportional to 870,152.40, 1,305,228.60 and 811,103.40 is: 1,216,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,152.40 : 1,305,228.60 = 811,103.40 : x
  2. Step 2: Convert to fraction form
    870,152.40/1,305,228.60 = 811,103.40/x
  3. Step 3: Cross multiply
    870,152.40x = 1,305,228.60 × 811,103.40
  4. Step 4: Simplify right side
    870,152.40x = 1,058,675,355,237.24
  5. Step 5: Solve for x
    x = 1,058,675,355,237.24/870,152.40
  6. Step 6: Final answer
    x = 1,216,655.10

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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.