Home / 711,739.92-982,158.72-389,385.84

Finding the Fourth Proportional to 711,739.92, 982,158.72 and 389,385.84

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Solution

The fourth proportional to 711,739.92, 982,158.72 and 389,385.84 is: 537,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,739.92 : 982,158.72 = 389,385.84 : x
  2. Step 2: Convert to fraction form
    711,739.92/982,158.72 = 389,385.84/x
  3. Step 3: Cross multiply
    711,739.92x = 982,158.72 × 389,385.84
  4. Step 4: Simplify right side
    711,739.92x = 382,438,698,200.53
  5. Step 5: Solve for x
    x = 382,438,698,200.53/711,739.92
  6. Step 6: Final answer
    x = 537,329.28

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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.