Home / 553,531.02-763,946.10-311,861.46

Finding the Fourth Proportional to 553,531.02, 763,946.10 and 311,861.46

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Solution

The fourth proportional to 553,531.02, 763,946.10 and 311,861.46 is: 430,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,531.02 : 763,946.10 = 311,861.46 : x
  2. Step 2: Convert to fraction form
    553,531.02/763,946.10 = 311,861.46/x
  3. Step 3: Cross multiply
    553,531.02x = 763,946.10 × 311,861.46
  4. Step 4: Simplify right side
    553,531.02x = 238,245,346,107.31
  5. Step 5: Solve for x
    x = 238,245,346,107.31/553,531.02
  6. Step 6: Final answer
    x = 430,410.11

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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.