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Finding the Fourth Proportional to 557,018.12, 768,685.98 and 302,369.48

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Solution

The fourth proportional to 557,018.12, 768,685.98 and 302,369.48 is: 417,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,018.12 : 768,685.98 = 302,369.48 : x
  2. Step 2: Convert to fraction form
    557,018.12/768,685.98 = 302,369.48/x
  3. Step 3: Cross multiply
    557,018.12x = 768,685.98 × 302,369.48
  4. Step 4: Simplify right side
    557,018.12x = 232,427,180,055.89
  5. Step 5: Solve for x
    x = 232,427,180,055.89/557,018.12
  6. Step 6: Final answer
    x = 417,270.41

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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.