Home / 285,081,628.32-393,412,646.64-154,701,436.32

Finding the Fourth Proportional to 285,081,628.32, 393,412,646.64 and 154,701,436.32

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Solution

The fourth proportional to 285,081,628.32, 393,412,646.64 and 154,701,436.32 is: 213,487,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,081,628.32 : 393,412,646.64 = 154,701,436.32 : x
  2. Step 2: Convert to fraction form
    285,081,628.32/393,412,646.64 = 154,701,436.32/x
  3. Step 3: Cross multiply
    285,081,628.32x = 393,412,646.64 × 154,701,436.32
  4. Step 4: Simplify right side
    285,081,628.32x = 60,861,501,501,660,616
  5. Step 5: Solve for x
    x = 60,861,501,501,660,616/285,081,628.32
  6. Step 6: Final answer
    x = 213,487,981.88

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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.