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Finding the Fourth Proportional to 713,192.70, 984,229.73 and 390,903.63

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Solution

The fourth proportional to 713,192.70, 984,229.73 and 390,903.63 is: 539,460.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,192.70 : 984,229.73 = 390,903.63 : x
  2. Step 2: Convert to fraction form
    713,192.70/984,229.73 = 390,903.63/x
  3. Step 3: Cross multiply
    713,192.70x = 984,229.73 × 390,903.63
  4. Step 4: Simplify right side
    713,192.70x = 384,738,969,289.77
  5. Step 5: Solve for x
    x = 384,738,969,289.77/713,192.70
  6. Step 6: Final answer
    x = 539,460.05

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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.