Home / 643,714,487.64-888,640,913.07-431,945,549.91

Finding the Fourth Proportional to 643,714,487.64, 888,640,913.07 and 431,945,549.91

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Solution

The fourth proportional to 643,714,487.64, 888,640,913.07 and 431,945,549.91 is: 596,296,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,714,487.64 : 888,640,913.07 = 431,945,549.91 : x
  2. Step 2: Convert to fraction form
    643,714,487.64/888,640,913.07 = 431,945,549.91/x
  3. Step 3: Cross multiply
    643,714,487.64x = 888,640,913.07 × 431,945,549.91
  4. Step 4: Simplify right side
    643,714,487.64x = 383,844,487,868,545,728
  5. Step 5: Solve for x
    x = 383,844,487,868,545,728/643,714,487.64
  6. Step 6: Final answer
    x = 596,296,176.70

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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.