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Finding the Fourth Proportional to 577,465.30, 865,213.80 and 492,828.40

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Solution

The fourth proportional to 577,465.30, 865,213.80 and 492,828.40 is: 738,402.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,465.30 : 865,213.80 = 492,828.40 : x
  2. Step 2: Convert to fraction form
    577,465.30/865,213.80 = 492,828.40/x
  3. Step 3: Cross multiply
    577,465.30x = 865,213.80 × 492,828.40
  4. Step 4: Simplify right side
    577,465.30x = 426,401,932,711.92
  5. Step 5: Solve for x
    x = 426,401,932,711.92/577,465.30
  6. Step 6: Final answer
    x = 738,402.69

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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.