Home / 661,985.40-993,107.70-282,905.40

Finding the Fourth Proportional to 661,985.40, 993,107.70 and 282,905.40

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Solution

The fourth proportional to 661,985.40, 993,107.70 and 282,905.40 is: 424,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,985.40 : 993,107.70 = 282,905.40 : x
  2. Step 2: Convert to fraction form
    661,985.40/993,107.70 = 282,905.40/x
  3. Step 3: Cross multiply
    661,985.40x = 993,107.70 × 282,905.40
  4. Step 4: Simplify right side
    661,985.40x = 280,955,531,111.58
  5. Step 5: Solve for x
    x = 280,955,531,111.58/661,985.40
  6. Step 6: Final answer
    x = 424,413.49

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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.