Home / 404,947.20-607,420.80-399,042.30

Finding the Fourth Proportional to 404,947.20, 607,420.80 and 399,042.30

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Solution

The fourth proportional to 404,947.20, 607,420.80 and 399,042.30 is: 598,563.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,947.20 : 607,420.80 = 399,042.30 : x
  2. Step 2: Convert to fraction form
    404,947.20/607,420.80 = 399,042.30/x
  3. Step 3: Cross multiply
    404,947.20x = 607,420.80 × 399,042.30
  4. Step 4: Simplify right side
    404,947.20x = 242,386,593,099.84
  5. Step 5: Solve for x
    x = 242,386,593,099.84/404,947.20
  6. Step 6: Final answer
    x = 598,563.45

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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.