Home / 3,121,678.20-4,679,406.90-1,435,841.40

Finding the Fourth Proportional to 3,121,678.20, 4,679,406.90 and 1,435,841.40

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Solution

The fourth proportional to 3,121,678.20, 4,679,406.90 and 1,435,841.40 is: 2,152,331.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,678.20 : 4,679,406.90 = 1,435,841.40 : x
  2. Step 2: Convert to fraction form
    3,121,678.20/4,679,406.90 = 1,435,841.40/x
  3. Step 3: Cross multiply
    3,121,678.20x = 4,679,406.90 × 1,435,841.40
  4. Step 4: Simplify right side
    3,121,678.20x = 6,718,886,154,465.66
  5. Step 5: Solve for x
    x = 6,718,886,154,465.66/3,121,678.20
  6. Step 6: Final answer
    x = 2,152,331.45

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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.