Home / 738,401.60-1,018,998.40-416,116.80

Finding the Fourth Proportional to 738,401.60, 1,018,998.40 and 416,116.80

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Solution

The fourth proportional to 738,401.60, 1,018,998.40 and 416,116.80 is: 574,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,401.60 : 1,018,998.40 = 416,116.80 : x
  2. Step 2: Convert to fraction form
    738,401.60/1,018,998.40 = 416,116.80/x
  3. Step 3: Cross multiply
    738,401.60x = 1,018,998.40 × 416,116.80
  4. Step 4: Simplify right side
    738,401.60x = 424,022,353,413.12
  5. Step 5: Solve for x
    x = 424,022,353,413.12/738,401.60
  6. Step 6: Final answer
    x = 574,243.55

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.