Home / 828,307.20-1,242,023.40-354,457.20

Finding the Fourth Proportional to 828,307.20, 1,242,023.40 and 354,457.20

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Solution

The fourth proportional to 828,307.20, 1,242,023.40 and 354,457.20 is: 531,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,307.20 : 1,242,023.40 = 354,457.20 : x
  2. Step 2: Convert to fraction form
    828,307.20/1,242,023.40 = 354,457.20/x
  3. Step 3: Cross multiply
    828,307.20x = 1,242,023.40 × 354,457.20
  4. Step 4: Simplify right side
    828,307.20x = 440,244,136,698.48
  5. Step 5: Solve for x
    x = 440,244,136,698.48/828,307.20
  6. Step 6: Final answer
    x = 531,498.62

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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.