Home / 2,140,007.40-3,210,006.78-520,763.40

Finding the Fourth Proportional to 2,140,007.40, 3,210,006.78 and 520,763.40

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Solution

The fourth proportional to 2,140,007.40, 3,210,006.78 and 520,763.40 is: 781,144.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140,007.40 : 3,210,006.78 = 520,763.40 : x
  2. Step 2: Convert to fraction form
    2,140,007.40/3,210,006.78 = 520,763.40/x
  3. Step 3: Cross multiply
    2,140,007.40x = 3,210,006.78 × 520,763.40
  4. Step 4: Simplify right side
    2,140,007.40x = 1,671,654,044,775.85
  5. Step 5: Solve for x
    x = 1,671,654,044,775.85/2,140,007.40
  6. Step 6: Final answer
    x = 781,144.05

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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.