Home / 670,720.96-1,006,081.26-390,041.38

Finding the Fourth Proportional to 670,720.96, 1,006,081.26 and 390,041.38

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Solution

The fourth proportional to 670,720.96, 1,006,081.26 and 390,041.38 is: 585,061.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,720.96 : 1,006,081.26 = 390,041.38 : x
  2. Step 2: Convert to fraction form
    670,720.96/1,006,081.26 = 390,041.38/x
  3. Step 3: Cross multiply
    670,720.96x = 1,006,081.26 × 390,041.38
  4. Step 4: Simplify right side
    670,720.96x = 392,413,323,042.54
  5. Step 5: Solve for x
    x = 392,413,323,042.54/670,720.96
  6. Step 6: Final answer
    x = 585,061.97

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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.