Home / 740,030.87-1,021,245.72-400,499.12

Finding the Fourth Proportional to 740,030.87, 1,021,245.72 and 400,499.12

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Solution

The fourth proportional to 740,030.87, 1,021,245.72 and 400,499.12 is: 552,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,030.87 : 1,021,245.72 = 400,499.12 : x
  2. Step 2: Convert to fraction form
    740,030.87/1,021,245.72 = 400,499.12/x
  3. Step 3: Cross multiply
    740,030.87x = 1,021,245.72 × 400,499.12
  4. Step 4: Simplify right side
    740,030.87x = 409,008,012,163.77
  5. Step 5: Solve for x
    x = 409,008,012,163.77/740,030.87
  6. Step 6: Final answer
    x = 552,690.47

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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.