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Finding the Fourth Proportional to 557,013.12, 768,679.08 and 302,364.48

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Solution

The fourth proportional to 557,013.12, 768,679.08 and 302,364.48 is: 417,263.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,013.12 : 768,679.08 = 302,364.48 : x
  2. Step 2: Convert to fraction form
    557,013.12/768,679.08 = 302,364.48/x
  3. Step 3: Cross multiply
    557,013.12x = 768,679.08 × 302,364.48
  4. Step 4: Simplify right side
    557,013.12x = 232,421,250,311.08
  5. Step 5: Solve for x
    x = 232,421,250,311.08/557,013.12
  6. Step 6: Final answer
    x = 417,263.51

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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.