Home / 638,770.55-881,280.74-409,454.25

Finding the Fourth Proportional to 638,770.55, 881,280.74 and 409,454.25

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Solution

The fourth proportional to 638,770.55, 881,280.74 and 409,454.25 is: 564,904.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,770.55 : 881,280.74 = 409,454.25 : x
  2. Step 2: Convert to fraction form
    638,770.55/881,280.74 = 409,454.25/x
  3. Step 3: Cross multiply
    638,770.55x = 881,280.74 × 409,454.25
  4. Step 4: Simplify right side
    638,770.55x = 360,844,142,388.87
  5. Step 5: Solve for x
    x = 360,844,142,388.87/638,770.55
  6. Step 6: Final answer
    x = 564,904.17

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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.