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Finding the Fourth Proportional to 684,499.94, 944,230.70 and 397,988.36

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Solution

The fourth proportional to 684,499.94, 944,230.70 and 397,988.36 is: 549,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,499.94 : 944,230.70 = 397,988.36 : x
  2. Step 2: Convert to fraction form
    684,499.94/944,230.70 = 397,988.36/x
  3. Step 3: Cross multiply
    684,499.94x = 944,230.70 × 397,988.36
  4. Step 4: Simplify right side
    684,499.94x = 375,792,827,754.65
  5. Step 5: Solve for x
    x = 375,792,827,754.65/684,499.94
  6. Step 6: Final answer
    x = 549,003.45

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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.