Home / 545,039.40-817,559.10-426,811.80

Finding the Fourth Proportional to 545,039.40, 817,559.10 and 426,811.80

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Solution

The fourth proportional to 545,039.40, 817,559.10 and 426,811.80 is: 640,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,039.40 : 817,559.10 = 426,811.80 : x
  2. Step 2: Convert to fraction form
    545,039.40/817,559.10 = 426,811.80/x
  3. Step 3: Cross multiply
    545,039.40x = 817,559.10 × 426,811.80
  4. Step 4: Simplify right side
    545,039.40x = 348,943,871,077.38
  5. Step 5: Solve for x
    x = 348,943,871,077.38/545,039.40
  6. Step 6: Final answer
    x = 640,217.70

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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.