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Finding the Fourth Proportional to 570,434.88, 855,399.60 and 304,145.76

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Solution

The fourth proportional to 570,434.88, 855,399.60 and 304,145.76 is: 456,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,434.88 : 855,399.60 = 304,145.76 : x
  2. Step 2: Convert to fraction form
    570,434.88/855,399.60 = 304,145.76/x
  3. Step 3: Cross multiply
    570,434.88x = 855,399.60 × 304,145.76
  4. Step 4: Simplify right side
    570,434.88x = 260,166,161,445.70
  5. Step 5: Solve for x
    x = 260,166,161,445.70/570,434.88
  6. Step 6: Final answer
    x = 456,083.89

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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.