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Finding the Fourth Proportional to 713,521.63, 984,652.23 and 391,230.73

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Solution

The fourth proportional to 713,521.63, 984,652.23 and 391,230.73 is: 539,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,521.63 : 984,652.23 = 391,230.73 : x
  2. Step 2: Convert to fraction form
    713,521.63/984,652.23 = 391,230.73/x
  3. Step 3: Cross multiply
    713,521.63x = 984,652.23 × 391,230.73
  4. Step 4: Simplify right side
    713,521.63x = 385,226,210,739.03
  5. Step 5: Solve for x
    x = 385,226,210,739.03/713,521.63
  6. Step 6: Final answer
    x = 539,894.23

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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.