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Finding the Fourth Proportional to 768,018.44, 1,059,868.50 and 428,501

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Solution

The fourth proportional to 768,018.44, 1,059,868.50 and 428,501 is: 591,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,018.44 : 1,059,868.50 = 428,501 : x
  2. Step 2: Convert to fraction form
    768,018.44/1,059,868.50 = 428,501/x
  3. Step 3: Cross multiply
    768,018.44x = 1,059,868.50 × 428,501
  4. Step 4: Simplify right side
    768,018.44x = 454,154,712,118.50
  5. Step 5: Solve for x
    x = 454,154,712,118.50/768,018.44
  6. Step 6: Final answer
    x = 591,333.08

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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.