Home / 708,827.12-978,205.04-386,554.80

Finding the Fourth Proportional to 708,827.12, 978,205.04 and 386,554.80

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Solution

The fourth proportional to 708,827.12, 978,205.04 and 386,554.80 is: 533,458.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,827.12 : 978,205.04 = 386,554.80 : x
  2. Step 2: Convert to fraction form
    708,827.12/978,205.04 = 386,554.80/x
  3. Step 3: Cross multiply
    708,827.12x = 978,205.04 × 386,554.80
  4. Step 4: Simplify right side
    708,827.12x = 378,129,853,596.19
  5. Step 5: Solve for x
    x = 378,129,853,596.19/708,827.12
  6. Step 6: Final answer
    x = 533,458.50

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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.