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Finding the Fourth Proportional to 598,921,612.80, 896,870,764.80 and 393,336,614.40

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Solution

The fourth proportional to 598,921,612.80, 896,870,764.80 and 393,336,614.40 is: 589,012,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,921,612.80 : 896,870,764.80 = 393,336,614.40 : x
  2. Step 2: Convert to fraction form
    598,921,612.80/896,870,764.80 = 393,336,614.40/x
  3. Step 3: Cross multiply
    598,921,612.80x = 896,870,764.80 × 393,336,614.40
  4. Step 4: Simplify right side
    598,921,612.80x = 352,772,110,180,770,624
  5. Step 5: Solve for x
    x = 352,772,110,180,770,624/598,921,612.80
  6. Step 6: Final answer
    x = 589,012,155.58

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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.