Home / 865,343.70-1,298,015.55-492,095.70

Finding the Fourth Proportional to 865,343.70, 1,298,015.55 and 492,095.70

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Solution

The fourth proportional to 865,343.70, 1,298,015.55 and 492,095.70 is: 738,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,343.70 : 1,298,015.55 = 492,095.70 : x
  2. Step 2: Convert to fraction form
    865,343.70/1,298,015.55 = 492,095.70/x
  3. Step 3: Cross multiply
    865,343.70x = 1,298,015.55 × 492,095.70
  4. Step 4: Simplify right side
    865,343.70x = 638,747,870,688.14
  5. Step 5: Solve for x
    x = 638,747,870,688.14/865,343.70
  6. Step 6: Final answer
    x = 738,143.55

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Half scale
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Double scale
Find fourth proportional to 865,344.70, 1,298,017.05 and 492,096.70
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.