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Finding the Fourth Proportional to 555,018.24, 765,925.12 and 300,369.48

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Solution

The fourth proportional to 555,018.24, 765,925.12 and 300,369.48 is: 414,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,018.24 : 765,925.12 = 300,369.48 : x
  2. Step 2: Convert to fraction form
    555,018.24/765,925.12 = 300,369.48/x
  3. Step 3: Cross multiply
    555,018.24x = 765,925.12 × 300,369.48
  4. Step 4: Simplify right side
    555,018.24x = 230,060,530,013.34
  5. Step 5: Solve for x
    x = 230,060,530,013.34/555,018.24
  6. Step 6: Final answer
    x = 414,509.85

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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.