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Finding the Fourth Proportional to 472,618.80, 708,928.20 and 260,042.40

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Solution

The fourth proportional to 472,618.80, 708,928.20 and 260,042.40 is: 390,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,618.80 : 708,928.20 = 260,042.40 : x
  2. Step 2: Convert to fraction form
    472,618.80/708,928.20 = 260,042.40/x
  3. Step 3: Cross multiply
    472,618.80x = 708,928.20 × 260,042.40
  4. Step 4: Simplify right side
    472,618.80x = 184,351,390,555.68
  5. Step 5: Solve for x
    x = 184,351,390,555.68/472,618.80
  6. Step 6: Final answer
    x = 390,063.60

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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.