Home / 1,377,280.80-2,065,921.20-430,941.60

Finding the Fourth Proportional to 1,377,280.80, 2,065,921.20 and 430,941.60

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Solution

The fourth proportional to 1,377,280.80, 2,065,921.20 and 430,941.60 is: 646,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,280.80 : 2,065,921.20 = 430,941.60 : x
  2. Step 2: Convert to fraction form
    1,377,280.80/2,065,921.20 = 430,941.60/x
  3. Step 3: Cross multiply
    1,377,280.80x = 2,065,921.20 × 430,941.60
  4. Step 4: Simplify right side
    1,377,280.80x = 890,291,387,401.92
  5. Step 5: Solve for x
    x = 890,291,387,401.92/1,377,280.80
  6. Step 6: Final answer
    x = 646,412.40

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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.