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Finding the Fourth Proportional to 617,906.40, 926,859.60 and 285,482.40

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Solution

The fourth proportional to 617,906.40, 926,859.60 and 285,482.40 is: 428,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,906.40 : 926,859.60 = 285,482.40 : x
  2. Step 2: Convert to fraction form
    617,906.40/926,859.60 = 285,482.40/x
  3. Step 3: Cross multiply
    617,906.40x = 926,859.60 × 285,482.40
  4. Step 4: Simplify right side
    617,906.40x = 264,602,103,071.04
  5. Step 5: Solve for x
    x = 264,602,103,071.04/617,906.40
  6. Step 6: Final answer
    x = 428,223.60

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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.