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Finding the Fourth Proportional to 554,998.30, 765,900.08 and 300,349.52

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Solution

The fourth proportional to 554,998.30, 765,900.08 and 300,349.52 is: 414,483.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,998.30 : 765,900.08 = 300,349.52 : x
  2. Step 2: Convert to fraction form
    554,998.30/765,900.08 = 300,349.52/x
  3. Step 3: Cross multiply
    554,998.30x = 765,900.08 × 300,349.52
  4. Step 4: Simplify right side
    554,998.30x = 230,037,721,395.96
  5. Step 5: Solve for x
    x = 230,037,721,395.96/554,998.30
  6. Step 6: Final answer
    x = 414,483.65

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1.5x scale

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.