Home / 693,051.12-956,413.88-387,140.39

Finding the Fourth Proportional to 693,051.12, 956,413.88 and 387,140.39

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Solution

The fourth proportional to 693,051.12, 956,413.88 and 387,140.39 is: 534,255.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,051.12 : 956,413.88 = 387,140.39 : x
  2. Step 2: Convert to fraction form
    693,051.12/956,413.88 = 387,140.39/x
  3. Step 3: Cross multiply
    693,051.12x = 956,413.88 × 387,140.39
  4. Step 4: Simplify right side
    693,051.12x = 370,266,435,786.84
  5. Step 5: Solve for x
    x = 370,266,435,786.84/693,051.12
  6. Step 6: Final answer
    x = 534,255.59

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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.