Home / 699,012.71-964,525.01-393,070.85

Finding the Fourth Proportional to 699,012.71, 964,525.01 and 393,070.85

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Solution

The fourth proportional to 699,012.71, 964,525.01 and 393,070.85 is: 542,374.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,012.71 : 964,525.01 = 393,070.85 : x
  2. Step 2: Convert to fraction form
    699,012.71/964,525.01 = 393,070.85/x
  3. Step 3: Cross multiply
    699,012.71x = 964,525.01 × 393,070.85
  4. Step 4: Simplify right side
    699,012.71x = 379,126,662,707.77
  5. Step 5: Solve for x
    x = 379,126,662,707.77/699,012.71
  6. Step 6: Final answer
    x = 542,374.49

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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.