Home / 739,985.20-1,109,491.80-290,435.20

Finding the Fourth Proportional to 739,985.20, 1,109,491.80 and 290,435.20

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Solution

The fourth proportional to 739,985.20, 1,109,491.80 and 290,435.20 is: 435,462.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,985.20 : 1,109,491.80 = 290,435.20 : x
  2. Step 2: Convert to fraction form
    739,985.20/1,109,491.80 = 290,435.20/x
  3. Step 3: Cross multiply
    739,985.20x = 1,109,491.80 × 290,435.20
  4. Step 4: Simplify right side
    739,985.20x = 322,235,472,831.36
  5. Step 5: Solve for x
    x = 322,235,472,831.36/739,985.20
  6. Step 6: Final answer
    x = 435,462.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.