Home / 739,285.74-1,020,213.63-399,753.18

Finding the Fourth Proportional to 739,285.74, 1,020,213.63 and 399,753.18

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Solution

The fourth proportional to 739,285.74, 1,020,213.63 and 399,753.18 is: 551,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,285.74 : 1,020,213.63 = 399,753.18 : x
  2. Step 2: Convert to fraction form
    739,285.74/1,020,213.63 = 399,753.18/x
  3. Step 3: Cross multiply
    739,285.74x = 1,020,213.63 × 399,753.18
  4. Step 4: Simplify right side
    739,285.74x = 407,833,642,871.84
  5. Step 5: Solve for x
    x = 407,833,642,871.84/739,285.74
  6. Step 6: Final answer
    x = 551,659.01

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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.