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Finding the Fourth Proportional to 739,133, 1,020,003.54 and 399,601.28

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Solution

The fourth proportional to 739,133, 1,020,003.54 and 399,601.28 is: 551,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,133 : 1,020,003.54 = 399,601.28 : x
  2. Step 2: Convert to fraction form
    739,133/1,020,003.54 = 399,601.28/x
  3. Step 3: Cross multiply
    739,133x = 1,020,003.54 × 399,601.28
  4. Step 4: Simplify right side
    739,133x = 407,594,720,188.53
  5. Step 5: Solve for x
    x = 407,594,720,188.53/739,133
  6. Step 6: Final answer
    x = 551,449.77

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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.