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Finding the Fourth Proportional to 472,619.20, 708,928.80 and 472,619.20

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Solution

The fourth proportional to 472,619.20, 708,928.80 and 472,619.20 is: 708,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,619.20 : 708,928.80 = 472,619.20 : x
  2. Step 2: Convert to fraction form
    472,619.20/708,928.80 = 472,619.20/x
  3. Step 3: Cross multiply
    472,619.20x = 708,928.80 × 472,619.20
  4. Step 4: Simplify right side
    472,619.20x = 335,053,362,312.96
  5. Step 5: Solve for x
    x = 335,053,362,312.96/472,619.20
  6. Step 6: Final answer
    x = 708,928.80

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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.