Home / 1,440,400,831.94-1,987,755,165.08-780,351,109.94

Finding the Fourth Proportional to 1,440,400,831.94, 1,987,755,165.08 and 780,351,109.94

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Solution

The fourth proportional to 1,440,400,831.94, 1,987,755,165.08 and 780,351,109.94 is: 1,076,885,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,400,831.94 : 1,987,755,165.08 = 780,351,109.94 : x
  2. Step 2: Convert to fraction form
    1,440,400,831.94/1,987,755,165.08 = 780,351,109.94/x
  3. Step 3: Cross multiply
    1,440,400,831.94x = 1,987,755,165.08 × 780,351,109.94
  4. Step 4: Simplify right side
    1,440,400,831.94x = 1,551,146,949,345,305,344
  5. Step 5: Solve for x
    x = 1,551,146,949,345,305,344/1,440,400,831.94
  6. Step 6: Final answer
    x = 1,076,885,624.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.