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Finding the Fourth Proportional to 487,483.80, 729,800.10 and 347,515.80

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Solution

The fourth proportional to 487,483.80, 729,800.10 and 347,515.80 is: 520,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,483.80 : 729,800.10 = 347,515.80 : x
  2. Step 2: Convert to fraction form
    487,483.80/729,800.10 = 347,515.80/x
  3. Step 3: Cross multiply
    487,483.80x = 729,800.10 × 347,515.80
  4. Step 4: Simplify right side
    487,483.80x = 253,617,065,591.58
  5. Step 5: Solve for x
    x = 253,617,065,591.58/487,483.80
  6. Step 6: Final answer
    x = 520,257.42

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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.