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Finding the Fourth Proportional to 403,458.59, 556,252.56 and 330,590.58

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Solution

The fourth proportional to 403,458.59, 556,252.56 and 330,590.58 is: 455,788.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,458.59 : 556,252.56 = 330,590.58 : x
  2. Step 2: Convert to fraction form
    403,458.59/556,252.56 = 330,590.58/x
  3. Step 3: Cross multiply
    403,458.59x = 556,252.56 × 330,590.58
  4. Step 4: Simplify right side
    403,458.59x = 183,891,856,436.89
  5. Step 5: Solve for x
    x = 183,891,856,436.89/403,458.59
  6. Step 6: Final answer
    x = 455,788.68

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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.