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Finding the Fourth Proportional to 556,918.60, 768,548.42 and 302,269.72

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Solution

The fourth proportional to 556,918.60, 768,548.42 and 302,269.72 is: 417,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,918.60 : 768,548.42 = 302,269.72 : x
  2. Step 2: Convert to fraction form
    556,918.60/768,548.42 = 302,269.72/x
  3. Step 3: Cross multiply
    556,918.60x = 768,548.42 × 302,269.72
  4. Step 4: Simplify right side
    556,918.60x = 232,308,915,719.84
  5. Step 5: Solve for x
    x = 232,308,915,719.84/556,918.60
  6. Step 6: Final answer
    x = 417,132.62

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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.