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Finding the Fourth Proportional to 498,485.60, 747,728.40 and 288,533.60

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Solution

The fourth proportional to 498,485.60, 747,728.40 and 288,533.60 is: 432,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,485.60 : 747,728.40 = 288,533.60 : x
  2. Step 2: Convert to fraction form
    498,485.60/747,728.40 = 288,533.60/x
  3. Step 3: Cross multiply
    498,485.60x = 747,728.40 × 288,533.60
  4. Step 4: Simplify right side
    498,485.60x = 215,744,767,074.24
  5. Step 5: Solve for x
    x = 215,744,767,074.24/498,485.60
  6. Step 6: Final answer
    x = 432,800.40

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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.