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Finding the Fourth Proportional to 617,512.40, 926,268.60 and 417,928.40

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Solution

The fourth proportional to 617,512.40, 926,268.60 and 417,928.40 is: 626,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,512.40 : 926,268.60 = 417,928.40 : x
  2. Step 2: Convert to fraction form
    617,512.40/926,268.60 = 417,928.40/x
  3. Step 3: Cross multiply
    617,512.40x = 926,268.60 × 417,928.40
  4. Step 4: Simplify right side
    617,512.40x = 387,113,953,968.24
  5. Step 5: Solve for x
    x = 387,113,953,968.24/617,512.40
  6. Step 6: Final answer
    x = 626,892.60

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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.