Home / 401,913.40-553,875.93-394,527.22

Finding the Fourth Proportional to 401,913.40, 553,875.93 and 394,527.22

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Solution

The fourth proportional to 401,913.40, 553,875.93 and 394,527.22 is: 543,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,913.40 : 553,875.93 = 394,527.22 : x
  2. Step 2: Convert to fraction form
    401,913.40/553,875.93 = 394,527.22/x
  3. Step 3: Cross multiply
    401,913.40x = 553,875.93 × 394,527.22
  4. Step 4: Simplify right side
    401,913.40x = 218,519,130,887.82
  5. Step 5: Solve for x
    x = 218,519,130,887.82/401,913.40
  6. Step 6: Final answer
    x = 543,697.06

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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.