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Finding the Fourth Proportional to 608,393.36, 839,303.52 and 393,602.60

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Solution

The fourth proportional to 608,393.36, 839,303.52 and 393,602.60 is: 542,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,393.36 : 839,303.52 = 393,602.60 : x
  2. Step 2: Convert to fraction form
    608,393.36/839,303.52 = 393,602.60/x
  3. Step 3: Cross multiply
    608,393.36x = 839,303.52 × 393,602.60
  4. Step 4: Simplify right side
    608,393.36x = 330,352,047,661.15
  5. Step 5: Solve for x
    x = 330,352,047,661.15/608,393.36
  6. Step 6: Final answer
    x = 542,990.88

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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.