Home / 858,425.10-1,287,637.65-503,609.10

Finding the Fourth Proportional to 858,425.10, 1,287,637.65 and 503,609.10

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Solution

The fourth proportional to 858,425.10, 1,287,637.65 and 503,609.10 is: 755,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,425.10 : 1,287,637.65 = 503,609.10 : x
  2. Step 2: Convert to fraction form
    858,425.10/1,287,637.65 = 503,609.10/x
  3. Step 3: Cross multiply
    858,425.10x = 1,287,637.65 × 503,609.10
  4. Step 4: Simplify right side
    858,425.10x = 648,466,038,042.62
  5. Step 5: Solve for x
    x = 648,466,038,042.62/858,425.10
  6. Step 6: Final answer
    x = 755,413.65

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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.