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Finding the Fourth Proportional to 722,352.16, 996,816.72 and 400,043.08

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Solution

The fourth proportional to 722,352.16, 996,816.72 and 400,043.08 is: 552,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,352.16 : 996,816.72 = 400,043.08 : x
  2. Step 2: Convert to fraction form
    722,352.16/996,816.72 = 400,043.08/x
  3. Step 3: Cross multiply
    722,352.16x = 996,816.72 × 400,043.08
  4. Step 4: Simplify right side
    722,352.16x = 398,769,630,864.30
  5. Step 5: Solve for x
    x = 398,769,630,864.30/722,352.16
  6. Step 6: Final answer
    x = 552,043.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.