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Finding the Fourth Proportional to 768,706.44, 1,060,792.78 and 429,167.40

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Solution

The fourth proportional to 768,706.44, 1,060,792.78 and 429,167.40 is: 592,238.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,706.44 : 1,060,792.78 = 429,167.40 : x
  2. Step 2: Convert to fraction form
    768,706.44/1,060,792.78 = 429,167.40/x
  3. Step 3: Cross multiply
    768,706.44x = 1,060,792.78 × 429,167.40
  4. Step 4: Simplify right side
    768,706.44x = 455,257,679,331.37
  5. Step 5: Solve for x
    x = 455,257,679,331.37/768,706.44
  6. Step 6: Final answer
    x = 592,238.67

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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.