Home / 711,840.70-982,340.18-389,550.93

Finding the Fourth Proportional to 711,840.70, 982,340.18 and 389,550.93

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Solution

The fourth proportional to 711,840.70, 982,340.18 and 389,550.93 is: 537,580.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,840.70 : 982,340.18 = 389,550.93 : x
  2. Step 2: Convert to fraction form
    711,840.70/982,340.18 = 389,550.93/x
  3. Step 3: Cross multiply
    711,840.70x = 982,340.18 × 389,550.93
  4. Step 4: Simplify right side
    711,840.70x = 382,671,530,695.37
  5. Step 5: Solve for x
    x = 382,671,530,695.37/711,840.70
  6. Step 6: Final answer
    x = 537,580.29

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Double scale
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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.