Home / 865,306.40-1,192,435.80-623,131.40

Finding the Fourth Proportional to 865,306.40, 1,192,435.80 and 623,131.40

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Solution

The fourth proportional to 865,306.40, 1,192,435.80 and 623,131.40 is: 858,706.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,306.40 : 1,192,435.80 = 623,131.40 : x
  2. Step 2: Convert to fraction form
    865,306.40/1,192,435.80 = 623,131.40/x
  3. Step 3: Cross multiply
    865,306.40x = 1,192,435.80 × 623,131.40
  4. Step 4: Simplify right side
    865,306.40x = 743,044,189,464.12
  5. Step 5: Solve for x
    x = 743,044,189,464.12/865,306.40
  6. Step 6: Final answer
    x = 858,706.45

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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.