Home / 739,040.64-1,019,875.68-399,509.52

Finding the Fourth Proportional to 739,040.64, 1,019,875.68 and 399,509.52

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Solution

The fourth proportional to 739,040.64, 1,019,875.68 and 399,509.52 is: 551,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,040.64 : 1,019,875.68 = 399,509.52 : x
  2. Step 2: Convert to fraction form
    739,040.64/1,019,875.68 = 399,509.52/x
  3. Step 3: Cross multiply
    739,040.64x = 1,019,875.68 × 399,509.52
  4. Step 4: Simplify right side
    739,040.64x = 407,450,043,376.47
  5. Step 5: Solve for x
    x = 407,450,043,376.47/739,040.64
  6. Step 6: Final answer
    x = 551,322.92

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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.