Home / 666,262-919,885.08-394,417.36

Finding the Fourth Proportional to 666,262, 919,885.08 and 394,417.36

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Solution

The fourth proportional to 666,262, 919,885.08 and 394,417.36 is: 544,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,262 : 919,885.08 = 394,417.36 : x
  2. Step 2: Convert to fraction form
    666,262/919,885.08 = 394,417.36/x
  3. Step 3: Cross multiply
    666,262x = 919,885.08 × 394,417.36
  4. Step 4: Simplify right side
    666,262x = 362,818,644,756.99
  5. Step 5: Solve for x
    x = 362,818,644,756.99/666,262
  6. Step 6: Final answer
    x = 544,558.51

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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.