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Finding the Fourth Proportional to 1,190,780, 1,643,302.32 and 654,236

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Solution

The fourth proportional to 1,190,780, 1,643,302.32 and 654,236 is: 902,859.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,780 : 1,643,302.32 = 654,236 : x
  2. Step 2: Convert to fraction form
    1,190,780/1,643,302.32 = 654,236/x
  3. Step 3: Cross multiply
    1,190,780x = 1,643,302.32 × 654,236
  4. Step 4: Simplify right side
    1,190,780x = 1,075,107,536,627.52
  5. Step 5: Solve for x
    x = 1,075,107,536,627.52/1,190,780
  6. Step 6: Final answer
    x = 902,859.92

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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.