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Finding the Fourth Proportional to 437,590.40, 603,987.10 and 285,008.80

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Solution

The fourth proportional to 437,590.40, 603,987.10 and 285,008.80 is: 393,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,590.40 : 603,987.10 = 285,008.80 : x
  2. Step 2: Convert to fraction form
    437,590.40/603,987.10 = 285,008.80/x
  3. Step 3: Cross multiply
    437,590.40x = 603,987.10 × 285,008.80
  4. Step 4: Simplify right side
    437,590.40x = 172,141,638,586.48
  5. Step 5: Solve for x
    x = 172,141,638,586.48/437,590.40
  6. Step 6: Final answer
    x = 393,385.32

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1.5x scale

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.