Home / 917,688.14-1,376,532.21-356,853.86

Finding the Fourth Proportional to 917,688.14, 1,376,532.21 and 356,853.86

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Solution

The fourth proportional to 917,688.14, 1,376,532.21 and 356,853.86 is: 535,280.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,688.14 : 1,376,532.21 = 356,853.86 : x
  2. Step 2: Convert to fraction form
    917,688.14/1,376,532.21 = 356,853.86/x
  3. Step 3: Cross multiply
    917,688.14x = 1,376,532.21 × 356,853.86
  4. Step 4: Simplify right side
    917,688.14x = 491,220,832,552.83
  5. Step 5: Solve for x
    x = 491,220,832,552.83/917,688.14
  6. Step 6: Final answer
    x = 535,280.79

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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.