Home / 870,178,178.45-1,305,303,287.55-256,762,404.20

Finding the Fourth Proportional to 870,178,178.45, 1,305,303,287.55 and 256,762,404.20

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Solution

The fourth proportional to 870,178,178.45, 1,305,303,287.55 and 256,762,404.20 is: 385,154,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,178,178.45 : 1,305,303,287.55 = 256,762,404.20 : x
  2. Step 2: Convert to fraction form
    870,178,178.45/1,305,303,287.55 = 256,762,404.20/x
  3. Step 3: Cross multiply
    870,178,178.45x = 1,305,303,287.55 × 256,762,404.20
  4. Step 4: Simplify right side
    870,178,178.45x = 335,152,810,314,975,360
  5. Step 5: Solve for x
    x = 335,152,810,314,975,360/870,178,178.45
  6. Step 6: Final answer
    x = 385,154,234.63

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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.