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Finding the Fourth Proportional to 5,217,607.80, 7,826,411.70 and 1,851,377.40

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Solution

The fourth proportional to 5,217,607.80, 7,826,411.70 and 1,851,377.40 is: 2,777,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217,607.80 : 7,826,411.70 = 1,851,377.40 : x
  2. Step 2: Convert to fraction form
    5,217,607.80/7,826,411.70 = 1,851,377.40/x
  3. Step 3: Cross multiply
    5,217,607.80x = 7,826,411.70 × 1,851,377.40
  4. Step 4: Simplify right side
    5,217,607.80x = 14,489,641,744,475.58
  5. Step 5: Solve for x
    x = 14,489,641,744,475.58/5,217,607.80
  6. Step 6: Final answer
    x = 2,777,066.10

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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.