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Finding the Fourth Proportional to 1,776,503.93, 2,664,731.25 and 428,655.29

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Solution

The fourth proportional to 1,776,503.93, 2,664,731.25 and 428,655.29 is: 642,976.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776,503.93 : 2,664,731.25 = 428,655.29 : x
  2. Step 2: Convert to fraction form
    1,776,503.93/2,664,731.25 = 428,655.29/x
  3. Step 3: Cross multiply
    1,776,503.93x = 2,664,731.25 × 428,655.29
  4. Step 4: Simplify right side
    1,776,503.93x = 1,142,251,133,417.16
  5. Step 5: Solve for x
    x = 1,142,251,133,417.16/1,776,503.93
  6. Step 6: Final answer
    x = 642,976.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.