Home / 2,912,975.78-4,020,125.50-1,689,270.68

Finding the Fourth Proportional to 2,912,975.78, 4,020,125.50 and 1,689,270.68

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Solution

The fourth proportional to 2,912,975.78, 4,020,125.50 and 1,689,270.68 is: 2,331,320.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912,975.78 : 4,020,125.50 = 1,689,270.68 : x
  2. Step 2: Convert to fraction form
    2,912,975.78/4,020,125.50 = 1,689,270.68/x
  3. Step 3: Cross multiply
    2,912,975.78x = 4,020,125.50 × 1,689,270.68
  4. Step 4: Simplify right side
    2,912,975.78x = 6,791,080,137,070.34
  5. Step 5: Solve for x
    x = 6,791,080,137,070.34/2,912,975.78
  6. Step 6: Final answer
    x = 2,331,320.49

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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.