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Finding the Fourth Proportional to 1,079,796, 1,490,118.60 and 627,116.16

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Solution

The fourth proportional to 1,079,796, 1,490,118.60 and 627,116.16 is: 865,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,796 : 1,490,118.60 = 627,116.16 : x
  2. Step 2: Convert to fraction form
    1,079,796/1,490,118.60 = 627,116.16/x
  3. Step 3: Cross multiply
    1,079,796x = 1,490,118.60 × 627,116.16
  4. Step 4: Simplify right side
    1,079,796x = 934,477,454,376.58
  5. Step 5: Solve for x
    x = 934,477,454,376.58/1,079,796
  6. Step 6: Final answer
    x = 865,420.37

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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.