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Finding the Fourth Proportional to 557,076.60, 768,761.58 and 302,421.24

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Solution

The fourth proportional to 557,076.60, 768,761.58 and 302,421.24 is: 417,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,076.60 : 768,761.58 = 302,421.24 : x
  2. Step 2: Convert to fraction form
    557,076.60/768,761.58 = 302,421.24/x
  3. Step 3: Cross multiply
    557,076.60x = 768,761.58 × 302,421.24
  4. Step 4: Simplify right side
    557,076.60x = 232,489,830,287.96
  5. Step 5: Solve for x
    x = 232,489,830,287.96/557,076.60
  6. Step 6: Final answer
    x = 417,339.07

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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.