Home / 3,120,520.65-4,680,780.98-1,918,545.45

Finding the Fourth Proportional to 3,120,520.65, 4,680,780.98 and 1,918,545.45

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Solution

The fourth proportional to 3,120,520.65, 4,680,780.98 and 1,918,545.45 is: 2,877,818.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,520.65 : 4,680,780.98 = 1,918,545.45 : x
  2. Step 2: Convert to fraction form
    3,120,520.65/4,680,780.98 = 1,918,545.45/x
  3. Step 3: Cross multiply
    3,120,520.65x = 4,680,780.98 × 1,918,545.45
  4. Step 4: Simplify right side
    3,120,520.65x = 8,980,291,042,032.81
  5. Step 5: Solve for x
    x = 8,980,291,042,032.81/3,120,520.65
  6. Step 6: Final answer
    x = 2,877,818.18

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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.