Home / 685,124,171.58-945,472,393.71-371,858,498.94

Finding the Fourth Proportional to 685,124,171.58, 945,472,393.71 and 371,858,498.94

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Solution

The fourth proportional to 685,124,171.58, 945,472,393.71 and 371,858,498.94 is: 513,165,291.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,124,171.58 : 945,472,393.71 = 371,858,498.94 : x
  2. Step 2: Convert to fraction form
    685,124,171.58/945,472,393.71 = 371,858,498.94/x
  3. Step 3: Cross multiply
    685,124,171.58x = 945,472,393.71 × 371,858,498.94
  4. Step 4: Simplify right side
    685,124,171.58x = 351,581,945,114,209,280
  5. Step 5: Solve for x
    x = 351,581,945,114,209,280/685,124,171.58
  6. Step 6: Final answer
    x = 513,165,291.34

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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.