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Finding the Fourth Proportional to 651,075.90, 978,110.59 and 459,391.51

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Solution

The fourth proportional to 651,075.90, 978,110.59 and 459,391.51 is: 690,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,075.90 : 978,110.59 = 459,391.51 : x
  2. Step 2: Convert to fraction form
    651,075.90/978,110.59 = 459,391.51/x
  3. Step 3: Cross multiply
    651,075.90x = 978,110.59 × 459,391.51
  4. Step 4: Simplify right side
    651,075.90x = 449,335,697,293.34
  5. Step 5: Solve for x
    x = 449,335,697,293.34/651,075.90
  6. Step 6: Final answer
    x = 690,143.34

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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.