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Finding the Fourth Proportional to 712,833.32, 983,709.96 and 390,555.64

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Solution

The fourth proportional to 712,833.32, 983,709.96 and 390,555.64 is: 538,966.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,833.32 : 983,709.96 = 390,555.64 : x
  2. Step 2: Convert to fraction form
    712,833.32/983,709.96 = 390,555.64/x
  3. Step 3: Cross multiply
    712,833.32x = 983,709.96 × 390,555.64
  4. Step 4: Simplify right side
    712,833.32x = 384,193,473,002.17
  5. Step 5: Solve for x
    x = 384,193,473,002.17/712,833.32
  6. Step 6: Final answer
    x = 538,966.77

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