Home / 522,037.20-783,055.80-312,085.20

Finding the Fourth Proportional to 522,037.20, 783,055.80 and 312,085.20

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Solution

The fourth proportional to 522,037.20, 783,055.80 and 312,085.20 is: 468,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,037.20 : 783,055.80 = 312,085.20 : x
  2. Step 2: Convert to fraction form
    522,037.20/783,055.80 = 312,085.20/x
  3. Step 3: Cross multiply
    522,037.20x = 783,055.80 × 312,085.20
  4. Step 4: Simplify right side
    522,037.20x = 244,380,125,954.16
  5. Step 5: Solve for x
    x = 244,380,125,954.16/522,037.20
  6. Step 6: Final answer
    x = 468,127.80

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Double scale
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Similar ratio
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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.