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Finding the Fourth Proportional to 403,478.62, 556,613.56 and 260,284.80

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Solution

The fourth proportional to 403,478.62, 556,613.56 and 260,284.80 is: 359,072.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,478.62 : 556,613.56 = 260,284.80 : x
  2. Step 2: Convert to fraction form
    403,478.62/556,613.56 = 260,284.80/x
  3. Step 3: Cross multiply
    403,478.62x = 556,613.56 × 260,284.80
  4. Step 4: Simplify right side
    403,478.62x = 144,878,049,141.89
  5. Step 5: Solve for x
    x = 144,878,049,141.89/403,478.62
  6. Step 6: Final answer
    x = 359,072.43

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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.