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Finding the Fourth Proportional to 769,810.88, 1,062,320.19 and 425,638.07

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Solution

The fourth proportional to 769,810.88, 1,062,320.19 and 425,638.07 is: 587,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,810.88 : 1,062,320.19 = 425,638.07 : x
  2. Step 2: Convert to fraction form
    769,810.88/1,062,320.19 = 425,638.07/x
  3. Step 3: Cross multiply
    769,810.88x = 1,062,320.19 × 425,638.07
  4. Step 4: Simplify right side
    769,810.88x = 452,163,915,393.63
  5. Step 5: Solve for x
    x = 452,163,915,393.63/769,810.88
  6. Step 6: Final answer
    x = 587,370.13

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1.5x scale

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.