Home / 413,129.20-619,693.80-385,135.60

Finding the Fourth Proportional to 413,129.20, 619,693.80 and 385,135.60

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Solution

The fourth proportional to 413,129.20, 619,693.80 and 385,135.60 is: 577,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,129.20 : 619,693.80 = 385,135.60 : x
  2. Step 2: Convert to fraction form
    413,129.20/619,693.80 = 385,135.60/x
  3. Step 3: Cross multiply
    413,129.20x = 619,693.80 × 385,135.60
  4. Step 4: Simplify right side
    413,129.20x = 238,666,143,479.28
  5. Step 5: Solve for x
    x = 238,666,143,479.28/413,129.20
  6. Step 6: Final answer
    x = 577,703.40

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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.