Home / 858,420.70-1,287,617.95-290,200.96

Finding the Fourth Proportional to 858,420.70, 1,287,617.95 and 290,200.96

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Solution

The fourth proportional to 858,420.70, 1,287,617.95 and 290,200.96 is: 435,297.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,420.70 : 1,287,617.95 = 290,200.96 : x
  2. Step 2: Convert to fraction form
    858,420.70/1,287,617.95 = 290,200.96/x
  3. Step 3: Cross multiply
    858,420.70x = 1,287,617.95 × 290,200.96
  4. Step 4: Simplify right side
    858,420.70x = 373,667,958,039.64
  5. Step 5: Solve for x
    x = 373,667,958,039.64/858,420.70
  6. Step 6: Final answer
    x = 435,297.00

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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.