Home / 828,725.64-1,243,004.16-260,111.10

Finding the Fourth Proportional to 828,725.64, 1,243,004.16 and 260,111.10

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Solution

The fourth proportional to 828,725.64, 1,243,004.16 and 260,111.10 is: 390,140.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,725.64 : 1,243,004.16 = 260,111.10 : x
  2. Step 2: Convert to fraction form
    828,725.64/1,243,004.16 = 260,111.10/x
  3. Step 3: Cross multiply
    828,725.64x = 1,243,004.16 × 260,111.10
  4. Step 4: Simplify right side
    828,725.64x = 323,319,179,362.18
  5. Step 5: Solve for x
    x = 323,319,179,362.18/828,725.64
  6. Step 6: Final answer
    x = 390,140.19

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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.