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Finding the Fourth Proportional to 553,120.36, 828,980.70 and 353,363.56

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Solution

The fourth proportional to 553,120.36, 828,980.70 and 353,363.56 is: 529,598.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,120.36 : 828,980.70 = 353,363.56 : x
  2. Step 2: Convert to fraction form
    553,120.36/828,980.70 = 353,363.56/x
  3. Step 3: Cross multiply
    553,120.36x = 828,980.70 × 353,363.56
  4. Step 4: Simplify right side
    553,120.36x = 292,931,571,323.29
  5. Step 5: Solve for x
    x = 292,931,571,323.29/553,120.36
  6. Step 6: Final answer
    x = 529,598.24

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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.