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Finding the Fourth Proportional to 659,881.50, 910,638.90 and 358,075.50

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Solution

The fourth proportional to 659,881.50, 910,638.90 and 358,075.50 is: 494,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,881.50 : 910,638.90 = 358,075.50 : x
  2. Step 2: Convert to fraction form
    659,881.50/910,638.90 = 358,075.50/x
  3. Step 3: Cross multiply
    659,881.50x = 910,638.90 × 358,075.50
  4. Step 4: Simplify right side
    659,881.50x = 326,077,479,436.95
  5. Step 5: Solve for x
    x = 326,077,479,436.95/659,881.50
  6. Step 6: Final answer
    x = 494,145.51

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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.