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Finding the Fourth Proportional to 520,093.30, 780,139.95 and 319,764.10

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Solution

The fourth proportional to 520,093.30, 780,139.95 and 319,764.10 is: 479,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.30 : 780,139.95 = 319,764.10 : x
  2. Step 2: Convert to fraction form
    520,093.30/780,139.95 = 319,764.10/x
  3. Step 3: Cross multiply
    520,093.30x = 780,139.95 × 319,764.10
  4. Step 4: Simplify right side
    520,093.30x = 249,460,748,985.80
  5. Step 5: Solve for x
    x = 249,460,748,985.80/520,093.30
  6. Step 6: Final answer
    x = 479,646.15

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