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Finding the Fourth Proportional to 711,868.84, 982,365.87 and 389,572.47

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Solution

The fourth proportional to 711,868.84, 982,365.87 and 389,572.47 is: 537,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,868.84 : 982,365.87 = 389,572.47 : x
  2. Step 2: Convert to fraction form
    711,868.84/982,365.87 = 389,572.47/x
  3. Step 3: Cross multiply
    711,868.84x = 982,365.87 × 389,572.47
  4. Step 4: Simplify right side
    711,868.84x = 382,702,699,880.50
  5. Step 5: Solve for x
    x = 382,702,699,880.50/711,868.84
  6. Step 6: Final answer
    x = 537,602.83

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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.