Home / 403,877.04-557,023.14-355,374.24

Finding the Fourth Proportional to 403,877.04, 557,023.14 and 355,374.24

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Solution

The fourth proportional to 403,877.04, 557,023.14 and 355,374.24 is: 490,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,877.04 : 557,023.14 = 355,374.24 : x
  2. Step 2: Convert to fraction form
    403,877.04/557,023.14 = 355,374.24/x
  3. Step 3: Cross multiply
    403,877.04x = 557,023.14 × 355,374.24
  4. Step 4: Simplify right side
    403,877.04x = 197,951,675,039.91
  5. Step 5: Solve for x
    x = 197,951,675,039.91/403,877.04
  6. Step 6: Final answer
    x = 490,128.57

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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.