Home / 671,208.20-1,006,812.30-645,403.40

Finding the Fourth Proportional to 671,208.20, 1,006,812.30 and 645,403.40

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Solution

The fourth proportional to 671,208.20, 1,006,812.30 and 645,403.40 is: 968,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,208.20 : 1,006,812.30 = 645,403.40 : x
  2. Step 2: Convert to fraction form
    671,208.20/1,006,812.30 = 645,403.40/x
  3. Step 3: Cross multiply
    671,208.20x = 1,006,812.30 × 645,403.40
  4. Step 4: Simplify right side
    671,208.20x = 649,800,081,581.82
  5. Step 5: Solve for x
    x = 649,800,081,581.82/671,208.20
  6. Step 6: Final answer
    x = 968,105.10

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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.