Home / 638,412.48-881,011.89-351,926.28

Finding the Fourth Proportional to 638,412.48, 881,011.89 and 351,926.28

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Solution

The fourth proportional to 638,412.48, 881,011.89 and 351,926.28 is: 485,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,412.48 : 881,011.89 = 351,926.28 : x
  2. Step 2: Convert to fraction form
    638,412.48/881,011.89 = 351,926.28/x
  3. Step 3: Cross multiply
    638,412.48x = 881,011.89 × 351,926.28
  4. Step 4: Simplify right side
    638,412.48x = 310,051,237,083.47
  5. Step 5: Solve for x
    x = 310,051,237,083.47/638,412.48
  6. Step 6: Final answer
    x = 485,659.74

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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.