Home / 8,109,920,176.71-12,168,376,121.65-4,378,470,693.36

Finding the Fourth Proportional to 8,109,920,176.71, 12,168,376,121.65 and 4,378,470,693.36

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Solution

The fourth proportional to 8,109,920,176.71, 12,168,376,121.65 and 4,378,470,693.36 is: 6,569,593,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109,920,176.71 : 12,168,376,121.65 = 4,378,470,693.36 : x
  2. Step 2: Convert to fraction form
    8,109,920,176.71/12,168,376,121.65 = 4,378,470,693.36/x
  3. Step 3: Cross multiply
    8,109,920,176.71x = 12,168,376,121.65 × 4,378,470,693.36
  4. Step 4: Simplify right side
    8,109,920,176.71x = 53,278,878,234,426,138,624
  5. Step 5: Solve for x
    x = 53,278,878,234,426,138,624/8,109,920,176.71
  6. Step 6: Final answer
    x = 6,569,593,420.59

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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.