Home / 638,559.21-881,208.40-348,186.36

Finding the Fourth Proportional to 638,559.21, 881,208.40 and 348,186.36

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Solution

The fourth proportional to 638,559.21, 881,208.40 and 348,186.36 is: 480,495.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,559.21 : 881,208.40 = 348,186.36 : x
  2. Step 2: Convert to fraction form
    638,559.21/881,208.40 = 348,186.36/x
  3. Step 3: Cross multiply
    638,559.21x = 881,208.40 × 348,186.36
  4. Step 4: Simplify right side
    638,559.21x = 306,824,745,197.42
  5. Step 5: Solve for x
    x = 306,824,745,197.42/638,559.21
  6. Step 6: Final answer
    x = 480,495.37

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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.