Home / 711,748.35-982,234.76-389,472.03

Finding the Fourth Proportional to 711,748.35, 982,234.76 and 389,472.03

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Solution

The fourth proportional to 711,748.35, 982,234.76 and 389,472.03 is: 537,483.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,748.35 : 982,234.76 = 389,472.03 : x
  2. Step 2: Convert to fraction form
    711,748.35/982,234.76 = 389,472.03/x
  3. Step 3: Cross multiply
    711,748.35x = 982,234.76 × 389,472.03
  4. Step 4: Simplify right side
    711,748.35x = 382,552,963,966.40
  5. Step 5: Solve for x
    x = 382,552,963,966.40/711,748.35
  6. Step 6: Final answer
    x = 537,483.46

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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.