Home / 487,420.46-671,144.90-426,651.02

Finding the Fourth Proportional to 487,420.46, 671,144.90 and 426,651.02

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Solution

The fourth proportional to 487,420.46, 671,144.90 and 426,651.02 is: 587,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,420.46 : 671,144.90 = 426,651.02 : x
  2. Step 2: Convert to fraction form
    487,420.46/671,144.90 = 426,651.02/x
  3. Step 3: Cross multiply
    487,420.46x = 671,144.90 × 426,651.02
  4. Step 4: Simplify right side
    487,420.46x = 286,344,656,152.80
  5. Step 5: Solve for x
    x = 286,344,656,152.80/487,420.46
  6. Step 6: Final answer
    x = 587,469.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.