Home / 553,528.02-763,941.96-311,858.46

Finding the Fourth Proportional to 553,528.02, 763,941.96 and 311,858.46

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Solution

The fourth proportional to 553,528.02, 763,941.96 and 311,858.46 is: 430,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,528.02 : 763,941.96 = 311,858.46 : x
  2. Step 2: Convert to fraction form
    553,528.02/763,941.96 = 311,858.46/x
  3. Step 3: Cross multiply
    553,528.02x = 763,941.96 × 311,858.46
  4. Step 4: Simplify right side
    553,528.02x = 238,241,763,174.98
  5. Step 5: Solve for x
    x = 238,241,763,174.98/553,528.02
  6. Step 6: Final answer
    x = 430,405.97

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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.