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Finding the Fourth Proportional to 719,395.59, 992,762.47 and 397,102.87

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Solution

The fourth proportional to 719,395.59, 992,762.47 and 397,102.87 is: 548,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,395.59 : 992,762.47 = 397,102.87 : x
  2. Step 2: Convert to fraction form
    719,395.59/992,762.47 = 397,102.87/x
  3. Step 3: Cross multiply
    719,395.59x = 992,762.47 × 397,102.87
  4. Step 4: Simplify right side
    719,395.59x = 394,228,826,065.29
  5. Step 5: Solve for x
    x = 394,228,826,065.29/719,395.59
  6. Step 6: Final answer
    x = 548,000.06

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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.