Home / 765,436.86-1,148,413.60-338,914.45

Finding the Fourth Proportional to 765,436.86, 1,148,413.60 and 338,914.45

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Solution

The fourth proportional to 765,436.86, 1,148,413.60 and 338,914.45 is: 508,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,436.86 : 1,148,413.60 = 338,914.45 : x
  2. Step 2: Convert to fraction form
    765,436.86/1,148,413.60 = 338,914.45/x
  3. Step 3: Cross multiply
    765,436.86x = 1,148,413.60 × 338,914.45
  4. Step 4: Simplify right side
    765,436.86x = 389,213,966,799.20
  5. Step 5: Solve for x
    x = 389,213,966,799.20/765,436.86
  6. Step 6: Final answer
    x = 508,486.05

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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.