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Finding the Fourth Proportional to 577,486.30, 865,245.30 and 492,849.40

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Solution

The fourth proportional to 577,486.30, 865,245.30 and 492,849.40 is: 738,434.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,486.30 : 865,245.30 = 492,849.40 : x
  2. Step 2: Convert to fraction form
    577,486.30/865,245.30 = 492,849.40/x
  3. Step 3: Cross multiply
    577,486.30x = 865,245.30 × 492,849.40
  4. Step 4: Simplify right side
    577,486.30x = 426,435,626,957.82
  5. Step 5: Solve for x
    x = 426,435,626,957.82/577,486.30
  6. Step 6: Final answer
    x = 738,434.19

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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.