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Finding the Fourth Proportional to 808,652.10, 1,212,978.15 and 717,672.90

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Solution

The fourth proportional to 808,652.10, 1,212,978.15 and 717,672.90 is: 1,076,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,652.10 : 1,212,978.15 = 717,672.90 : x
  2. Step 2: Convert to fraction form
    808,652.10/1,212,978.15 = 717,672.90/x
  3. Step 3: Cross multiply
    808,652.10x = 1,212,978.15 × 717,672.90
  4. Step 4: Simplify right side
    808,652.10x = 870,521,546,547.14
  5. Step 5: Solve for x
    x = 870,521,546,547.14/808,652.10
  6. Step 6: Final answer
    x = 1,076,509.35

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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.