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Finding the Fourth Proportional to 480,646.80, 720,970.20 and 437,101.20

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Solution

The fourth proportional to 480,646.80, 720,970.20 and 437,101.20 is: 655,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,646.80 : 720,970.20 = 437,101.20 : x
  2. Step 2: Convert to fraction form
    480,646.80/720,970.20 = 437,101.20/x
  3. Step 3: Cross multiply
    480,646.80x = 720,970.20 × 437,101.20
  4. Step 4: Simplify right side
    480,646.80x = 315,136,939,584.24
  5. Step 5: Solve for x
    x = 315,136,939,584.24/480,646.80
  6. Step 6: Final answer
    x = 655,651.80

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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.