Home / 657,609.10-986,413.65-258,117.10

Finding the Fourth Proportional to 657,609.10, 986,413.65 and 258,117.10

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Solution

The fourth proportional to 657,609.10, 986,413.65 and 258,117.10 is: 387,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,609.10 : 986,413.65 = 258,117.10 : x
  2. Step 2: Convert to fraction form
    657,609.10/986,413.65 = 258,117.10/x
  3. Step 3: Cross multiply
    657,609.10x = 986,413.65 × 258,117.10
  4. Step 4: Simplify right side
    657,609.10x = 254,610,230,738.42
  5. Step 5: Solve for x
    x = 254,610,230,738.42/657,609.10
  6. Step 6: Final answer
    x = 387,175.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.