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Finding the Fourth Proportional to 386,363.60, 578,623.80 and 386,363.60

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Solution

The fourth proportional to 386,363.60, 578,623.80 and 386,363.60 is: 578,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,363.60 : 578,623.80 = 386,363.60 : x
  2. Step 2: Convert to fraction form
    386,363.60/578,623.80 = 386,363.60/x
  3. Step 3: Cross multiply
    386,363.60x = 578,623.80 × 386,363.60
  4. Step 4: Simplify right side
    386,363.60x = 223,559,174,413.68
  5. Step 5: Solve for x
    x = 223,559,174,413.68/386,363.60
  6. Step 6: Final answer
    x = 578,623.80

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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.