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Finding the Fourth Proportional to 605,673.30, 907,525.80 and 521,036.40

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Solution

The fourth proportional to 605,673.30, 907,525.80 and 521,036.40 is: 780,707.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,673.30 : 907,525.80 = 521,036.40 : x
  2. Step 2: Convert to fraction form
    605,673.30/907,525.80 = 521,036.40/x
  3. Step 3: Cross multiply
    605,673.30x = 907,525.80 × 521,036.40
  4. Step 4: Simplify right side
    605,673.30x = 472,853,975,739.12
  5. Step 5: Solve for x
    x = 472,853,975,739.12/605,673.30
  6. Step 6: Final answer
    x = 780,707.98

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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.