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Finding the Fourth Proportional to 698,589.75, 964,053.86 and 380,637.75

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Solution

The fourth proportional to 698,589.75, 964,053.86 and 380,637.75 is: 525,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,589.75 : 964,053.86 = 380,637.75 : x
  2. Step 2: Convert to fraction form
    698,589.75/964,053.86 = 380,637.75/x
  3. Step 3: Cross multiply
    698,589.75x = 964,053.86 × 380,637.75
  4. Step 4: Simplify right side
    698,589.75x = 366,955,290,246.03
  5. Step 5: Solve for x
    x = 366,955,290,246.03/698,589.75
  6. Step 6: Final answer
    x = 525,280.10

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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.