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Finding the Fourth Proportional to 478,580.40, 717,870.60 and 291,956.40

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Solution

The fourth proportional to 478,580.40, 717,870.60 and 291,956.40 is: 437,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,580.40 : 717,870.60 = 291,956.40 : x
  2. Step 2: Convert to fraction form
    478,580.40/717,870.60 = 291,956.40/x
  3. Step 3: Cross multiply
    478,580.40x = 717,870.60 × 291,956.40
  4. Step 4: Simplify right side
    478,580.40x = 209,586,916,041.84
  5. Step 5: Solve for x
    x = 209,586,916,041.84/478,580.40
  6. Step 6: Final answer
    x = 437,934.60

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