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Finding the Fourth Proportional to 713,041.02, 984,004.35 and 390,744.18

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Solution

The fourth proportional to 713,041.02, 984,004.35 and 390,744.18 is: 539,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,041.02 : 984,004.35 = 390,744.18 : x
  2. Step 2: Convert to fraction form
    713,041.02/984,004.35 = 390,744.18/x
  3. Step 3: Cross multiply
    713,041.02x = 984,004.35 × 390,744.18
  4. Step 4: Simplify right side
    713,041.02x = 384,493,972,857.18
  5. Step 5: Solve for x
    x = 384,493,972,857.18/713,041.02
  6. Step 6: Final answer
    x = 539,231.21

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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.