Home / 857,705.76-1,183,532.40-475,639.20

Finding the Fourth Proportional to 857,705.76, 1,183,532.40 and 475,639.20

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Solution

The fourth proportional to 857,705.76, 1,183,532.40 and 475,639.20 is: 656,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,705.76 : 1,183,532.40 = 475,639.20 : x
  2. Step 2: Convert to fraction form
    857,705.76/1,183,532.40 = 475,639.20/x
  3. Step 3: Cross multiply
    857,705.76x = 1,183,532.40 × 475,639.20
  4. Step 4: Simplify right side
    857,705.76x = 562,934,403,910.08
  5. Step 5: Solve for x
    x = 562,934,403,910.08/857,705.76
  6. Step 6: Final answer
    x = 656,325.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.