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Finding the Fourth Proportional to 1,316,508, 1,974,768.48 and 319,236

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Solution

The fourth proportional to 1,316,508, 1,974,768.48 and 319,236 is: 478,855.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,508 : 1,974,768.48 = 319,236 : x
  2. Step 2: Convert to fraction form
    1,316,508/1,974,768.48 = 319,236/x
  3. Step 3: Cross multiply
    1,316,508x = 1,974,768.48 × 319,236
  4. Step 4: Simplify right side
    1,316,508x = 630,417,190,481.28
  5. Step 5: Solve for x
    x = 630,417,190,481.28/1,316,508
  6. Step 6: Final answer
    x = 478,855.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.