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Finding the Fourth Proportional to 640,965,661.30, 961,448,491.95 and 597,967,491.70

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Solution

The fourth proportional to 640,965,661.30, 961,448,491.95 and 597,967,491.70 is: 896,951,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,965,661.30 : 961,448,491.95 = 597,967,491.70 : x
  2. Step 2: Convert to fraction form
    640,965,661.30/961,448,491.95 = 597,967,491.70/x
  3. Step 3: Cross multiply
    640,965,661.30x = 961,448,491.95 × 597,967,491.70
  4. Step 4: Simplify right side
    640,965,661.30x = 574,914,943,130,089,216
  5. Step 5: Solve for x
    x = 574,914,943,130,089,216/640,965,661.30
  6. Step 6: Final answer
    x = 896,951,237.55

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Double scale
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1.5x scale

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.