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Finding the Fourth Proportional to 608,616.80, 912,925.20 and 397,109.60

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Solution

The fourth proportional to 608,616.80, 912,925.20 and 397,109.60 is: 595,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,616.80 : 912,925.20 = 397,109.60 : x
  2. Step 2: Convert to fraction form
    608,616.80/912,925.20 = 397,109.60/x
  3. Step 3: Cross multiply
    608,616.80x = 912,925.20 × 397,109.60
  4. Step 4: Simplify right side
    608,616.80x = 362,531,361,001.92
  5. Step 5: Solve for x
    x = 362,531,361,001.92/608,616.80
  6. Step 6: Final answer
    x = 595,664.40

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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.