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Finding the Fourth Proportional to 486,999.70, 730,499.55 and 319,038.10

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Solution

The fourth proportional to 486,999.70, 730,499.55 and 319,038.10 is: 478,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,999.70 : 730,499.55 = 319,038.10 : x
  2. Step 2: Convert to fraction form
    486,999.70/730,499.55 = 319,038.10/x
  3. Step 3: Cross multiply
    486,999.70x = 730,499.55 × 319,038.10
  4. Step 4: Simplify right side
    486,999.70x = 233,057,188,482.86
  5. Step 5: Solve for x
    x = 233,057,188,482.86/486,999.70
  6. Step 6: Final answer
    x = 478,557.15

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