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Finding the Fourth Proportional to 612,841.64, 920,763.78 and 578,851.61

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Solution

The fourth proportional to 612,841.64, 920,763.78 and 578,851.61 is: 869,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,841.64 : 920,763.78 = 578,851.61 : x
  2. Step 2: Convert to fraction form
    612,841.64/920,763.78 = 578,851.61/x
  3. Step 3: Cross multiply
    612,841.64x = 920,763.78 × 578,851.61
  4. Step 4: Simplify right side
    612,841.64x = 532,985,591,878.87
  5. Step 5: Solve for x
    x = 532,985,591,878.87/612,841.64
  6. Step 6: Final answer
    x = 869,695.47

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