Home / 3,119,134.60-4,678,701.90-989,385.40

Finding the Fourth Proportional to 3,119,134.60, 4,678,701.90 and 989,385.40

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Solution

The fourth proportional to 3,119,134.60, 4,678,701.90 and 989,385.40 is: 1,484,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,134.60 : 4,678,701.90 = 989,385.40 : x
  2. Step 2: Convert to fraction form
    3,119,134.60/4,678,701.90 = 989,385.40/x
  3. Step 3: Cross multiply
    3,119,134.60x = 4,678,701.90 × 989,385.40
  4. Step 4: Simplify right side
    3,119,134.60x = 4,629,039,350,812.26
  5. Step 5: Solve for x
    x = 4,629,039,350,812.26/3,119,134.60
  6. Step 6: Final answer
    x = 1,484,078.10

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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.