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Finding the Fourth Proportional to 713,136.88, 984,120.60 and 386,443.36

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Solution

The fourth proportional to 713,136.88, 984,120.60 and 386,443.36 is: 533,287.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,136.88 : 984,120.60 = 386,443.36 : x
  2. Step 2: Convert to fraction form
    713,136.88/984,120.60 = 386,443.36/x
  3. Step 3: Cross multiply
    713,136.88x = 984,120.60 × 386,443.36
  4. Step 4: Simplify right side
    713,136.88x = 380,306,871,309.22
  5. Step 5: Solve for x
    x = 380,306,871,309.22/713,136.88
  6. Step 6: Final answer
    x = 533,287.34

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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.