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Finding the Fourth Proportional to 7,984,818, 11,019,321 and 4,363,379.28

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Solution

The fourth proportional to 7,984,818, 11,019,321 and 4,363,379.28 is: 6,021,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984,818 : 11,019,321 = 4,363,379.28 : x
  2. Step 2: Convert to fraction form
    7,984,818/11,019,321 = 4,363,379.28/x
  3. Step 3: Cross multiply
    7,984,818x = 11,019,321 × 4,363,379.28
  4. Step 4: Simplify right side
    7,984,818x = 48,081,476,931,068.88
  5. Step 5: Solve for x
    x = 48,081,476,931,068.88/7,984,818
  6. Step 6: Final answer
    x = 6,021,612.13

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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.