Home / 1,318,711-1,819,821.18-715,099.48

Finding the Fourth Proportional to 1,318,711, 1,819,821.18 and 715,099.48

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Solution

The fourth proportional to 1,318,711, 1,819,821.18 and 715,099.48 is: 986,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,711 : 1,819,821.18 = 715,099.48 : x
  2. Step 2: Convert to fraction form
    1,318,711/1,819,821.18 = 715,099.48/x
  3. Step 3: Cross multiply
    1,318,711x = 1,819,821.18 × 715,099.48
  4. Step 4: Simplify right side
    1,318,711x = 1,301,353,179,510.99
  5. Step 5: Solve for x
    x = 1,301,353,179,510.99/1,318,711
  6. Step 6: Final answer
    x = 986,837.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.