Home / 877,143.61-1,314,655.89-427,190.23

Finding the Fourth Proportional to 877,143.61, 1,314,655.89 and 427,190.23

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Solution

The fourth proportional to 877,143.61, 1,314,655.89 and 427,190.23 is: 640,269.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,143.61 : 1,314,655.89 = 427,190.23 : x
  2. Step 2: Convert to fraction form
    877,143.61/1,314,655.89 = 427,190.23/x
  3. Step 3: Cross multiply
    877,143.61x = 1,314,655.89 × 427,190.23
  4. Step 4: Simplify right side
    877,143.61x = 561,608,152,019.96
  5. Step 5: Solve for x
    x = 561,608,152,019.96/877,143.61
  6. Step 6: Final answer
    x = 640,269.33

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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.