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Finding the Fourth Proportional to 880,992.50, 1,215,666.50 and 518,336.60

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Solution

The fourth proportional to 880,992.50, 1,215,666.50 and 518,336.60 is: 715,243.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,992.50 : 1,215,666.50 = 518,336.60 : x
  2. Step 2: Convert to fraction form
    880,992.50/1,215,666.50 = 518,336.60/x
  3. Step 3: Cross multiply
    880,992.50x = 1,215,666.50 × 518,336.60
  4. Step 4: Simplify right side
    880,992.50x = 630,124,440,343.90
  5. Step 5: Solve for x
    x = 630,124,440,343.90/880,992.50
  6. Step 6: Final answer
    x = 715,243.82

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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.