Home / 640,963,470.30-961,445,205.45-419,033,708.70

Finding the Fourth Proportional to 640,963,470.30, 961,445,205.45 and 419,033,708.70

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Solution

The fourth proportional to 640,963,470.30, 961,445,205.45 and 419,033,708.70 is: 628,550,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,963,470.30 : 961,445,205.45 = 419,033,708.70 : x
  2. Step 2: Convert to fraction form
    640,963,470.30/961,445,205.45 = 419,033,708.70/x
  3. Step 3: Cross multiply
    640,963,470.30x = 961,445,205.45 × 419,033,708.70
  4. Step 4: Simplify right side
    640,963,470.30x = 402,877,950,151,546,944
  5. Step 5: Solve for x
    x = 402,877,950,151,546,944/640,963,470.30
  6. Step 6: Final answer
    x = 628,550,563.05

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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.