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Finding the Fourth Proportional to 711,792.54, 982,289.43 and 389,502.45

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Solution

The fourth proportional to 711,792.54, 982,289.43 and 389,502.45 is: 537,521.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,792.54 : 982,289.43 = 389,502.45 : x
  2. Step 2: Convert to fraction form
    711,792.54/982,289.43 = 389,502.45/x
  3. Step 3: Cross multiply
    711,792.54x = 982,289.43 × 389,502.45
  4. Step 4: Simplify right side
    711,792.54x = 382,604,139,594.10
  5. Step 5: Solve for x
    x = 382,604,139,594.10/711,792.54
  6. Step 6: Final answer
    x = 537,521.99

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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.