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Finding the Fourth Proportional to 717,138.07, 1,075,364 and 417,704.05

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Solution

The fourth proportional to 717,138.07, 1,075,364 and 417,704.05 is: 626,356.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,138.07 : 1,075,364 = 417,704.05 : x
  2. Step 2: Convert to fraction form
    717,138.07/1,075,364 = 417,704.05/x
  3. Step 3: Cross multiply
    717,138.07x = 1,075,364 × 417,704.05
  4. Step 4: Simplify right side
    717,138.07x = 449,183,898,024.20
  5. Step 5: Solve for x
    x = 449,183,898,024.20/717,138.07
  6. Step 6: Final answer
    x = 626,356.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.