Home / 472,392,683.80-708,589,025.70-278,204,142.40

Finding the Fourth Proportional to 472,392,683.80, 708,589,025.70 and 278,204,142.40

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Solution

The fourth proportional to 472,392,683.80, 708,589,025.70 and 278,204,142.40 is: 417,306,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,683.80 : 708,589,025.70 = 278,204,142.40 : x
  2. Step 2: Convert to fraction form
    472,392,683.80/708,589,025.70 = 278,204,142.40/x
  3. Step 3: Cross multiply
    472,392,683.80x = 708,589,025.70 × 278,204,142.40
  4. Step 4: Simplify right side
    472,392,683.80x = 197,132,402,208,920,064
  5. Step 5: Solve for x
    x = 197,132,402,208,920,064/472,392,683.80
  6. Step 6: Final answer
    x = 417,306,213.60

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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.