Home / 553,530.02-763,944.72-311,860.46

Finding the Fourth Proportional to 553,530.02, 763,944.72 and 311,860.46

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Solution

The fourth proportional to 553,530.02, 763,944.72 and 311,860.46 is: 430,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,530.02 : 763,944.72 = 311,860.46 : x
  2. Step 2: Convert to fraction form
    553,530.02/763,944.72 = 311,860.46/x
  3. Step 3: Cross multiply
    553,530.02x = 763,944.72 × 311,860.46
  4. Step 4: Simplify right side
    553,530.02x = 238,244,151,793.77
  5. Step 5: Solve for x
    x = 238,244,151,793.77/553,530.02
  6. Step 6: Final answer
    x = 430,408.73

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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.