Home / 646,210,151,984.58-969,315,228,043.98-215,947,236,722.71

Finding the Fourth Proportional to 646,210,151,984.58, 969,315,228,043.98 and 215,947,236,722.71

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Solution

The fourth proportional to 646,210,151,984.58, 969,315,228,043.98 and 215,947,236,722.71 is: 323,920,855,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,210,151,984.58 : 969,315,228,043.98 = 215,947,236,722.71 : x
  2. Step 2: Convert to fraction form
    646,210,151,984.58/969,315,228,043.98 = 215,947,236,722.71/x
  3. Step 3: Cross multiply
    646,210,151,984.58x = 969,315,228,043.98 × 215,947,236,722.71
  4. Step 4: Simplify right side
    646,210,151,984.58x = 209,320,945,009,340,977,250,304
  5. Step 5: Solve for x
    x = 209,320,945,009,340,977,250,304/646,210,151,984.58
  6. Step 6: Final answer
    x = 323,920,855,106.49

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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.