Home / 7,128,017.80-10,689,953.10-3,934,673.80

Finding the Fourth Proportional to 7,128,017.80, 10,689,953.10 and 3,934,673.80

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Solution

The fourth proportional to 7,128,017.80, 10,689,953.10 and 3,934,673.80 is: 5,900,866.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,017.80 : 10,689,953.10 = 3,934,673.80 : x
  2. Step 2: Convert to fraction form
    7,128,017.80/10,689,953.10 = 3,934,673.80/x
  3. Step 3: Cross multiply
    7,128,017.80x = 10,689,953.10 × 3,934,673.80
  4. Step 4: Simplify right side
    7,128,017.80x = 42,061,478,385,798.77
  5. Step 5: Solve for x
    x = 42,061,478,385,798.77/7,128,017.80
  6. Step 6: Final answer
    x = 5,900,866.07

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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.