Home / 711,911.08-982,424.18-389,614.76

Finding the Fourth Proportional to 711,911.08, 982,424.18 and 389,614.76

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Solution

The fourth proportional to 711,911.08, 982,424.18 and 389,614.76 is: 537,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,911.08 : 982,424.18 = 389,614.76 : x
  2. Step 2: Convert to fraction form
    711,911.08/982,424.18 = 389,614.76/x
  3. Step 3: Cross multiply
    711,911.08x = 982,424.18 × 389,614.76
  4. Step 4: Simplify right side
    711,911.08x = 382,766,961,108.90
  5. Step 5: Solve for x
    x = 382,766,961,108.90/711,911.08
  6. Step 6: Final answer
    x = 537,661.19

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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.