Home / 1,285,807.42-1,928,711-432,807.48

Finding the Fourth Proportional to 1,285,807.42, 1,928,711 and 432,807.48

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Solution

The fourth proportional to 1,285,807.42, 1,928,711 and 432,807.48 is: 649,211.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,807.42 : 1,928,711 = 432,807.48 : x
  2. Step 2: Convert to fraction form
    1,285,807.42/1,928,711 = 432,807.48/x
  3. Step 3: Cross multiply
    1,285,807.42x = 1,928,711 × 432,807.48
  4. Step 4: Simplify right side
    1,285,807.42x = 834,760,547,558.28
  5. Step 5: Solve for x
    x = 834,760,547,558.28/1,285,807.42
  6. Step 6: Final answer
    x = 649,211.18

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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.