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Finding the Fourth Proportional to 724,393.94, 999,644.90 and 402,095.75

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Solution

The fourth proportional to 724,393.94, 999,644.90 and 402,095.75 is: 554,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,393.94 : 999,644.90 = 402,095.75 : x
  2. Step 2: Convert to fraction form
    724,393.94/999,644.90 = 402,095.75/x
  3. Step 3: Cross multiply
    724,393.94x = 999,644.90 × 402,095.75
  4. Step 4: Simplify right side
    724,393.94x = 401,952,958,790.47
  5. Step 5: Solve for x
    x = 401,952,958,790.47/724,393.94
  6. Step 6: Final answer
    x = 554,881.73

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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.