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Finding the Fourth Proportional to 824,192.80, 1,235,698.80 and 318,320.80

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Solution

The fourth proportional to 824,192.80, 1,235,698.80 and 318,320.80 is: 477,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,192.80 : 1,235,698.80 = 318,320.80 : x
  2. Step 2: Convert to fraction form
    824,192.80/1,235,698.80 = 318,320.80/x
  3. Step 3: Cross multiply
    824,192.80x = 1,235,698.80 × 318,320.80
  4. Step 4: Simplify right side
    824,192.80x = 393,348,630,575.04
  5. Step 5: Solve for x
    x = 393,348,630,575.04/824,192.80
  6. Step 6: Final answer
    x = 477,253.17

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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.