Home / 919,816.40-1,269,344.76-517,408.40

Finding the Fourth Proportional to 919,816.40, 1,269,344.76 and 517,408.40

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Solution

The fourth proportional to 919,816.40, 1,269,344.76 and 517,408.40 is: 714,022.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,816.40 : 1,269,344.76 = 517,408.40 : x
  2. Step 2: Convert to fraction form
    919,816.40/1,269,344.76 = 517,408.40/x
  3. Step 3: Cross multiply
    919,816.40x = 1,269,344.76 × 517,408.40
  4. Step 4: Simplify right side
    919,816.40x = 656,769,641,319.98
  5. Step 5: Solve for x
    x = 656,769,641,319.98/919,816.40
  6. Step 6: Final answer
    x = 714,022.54

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Half scale
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Double scale
Find fourth proportional to 919,817.40, 1,269,346.14 and 517,409.40
Similar ratio
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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.