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Finding the Fourth Proportional to 657,066.80, 983,413.20 and 476,639.30

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Solution

The fourth proportional to 657,066.80, 983,413.20 and 476,639.30 is: 713,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,066.80 : 983,413.20 = 476,639.30 : x
  2. Step 2: Convert to fraction form
    657,066.80/983,413.20 = 476,639.30/x
  3. Step 3: Cross multiply
    657,066.80x = 983,413.20 × 476,639.30
  4. Step 4: Simplify right side
    657,066.80x = 468,733,379,258.76
  5. Step 5: Solve for x
    x = 468,733,379,258.76/657,066.80
  6. Step 6: Final answer
    x = 713,372.49

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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.