Home / 1,433,509.32-1,978,133.22-821,654.76

Finding the Fourth Proportional to 1,433,509.32, 1,978,133.22 and 821,654.76

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Solution

The fourth proportional to 1,433,509.32, 1,978,133.22 and 821,654.76 is: 1,133,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,509.32 : 1,978,133.22 = 821,654.76 : x
  2. Step 2: Convert to fraction form
    1,433,509.32/1,978,133.22 = 821,654.76/x
  3. Step 3: Cross multiply
    1,433,509.32x = 1,978,133.22 × 821,654.76
  4. Step 4: Simplify right side
    1,433,509.32x = 1,625,342,576,127.13
  5. Step 5: Solve for x
    x = 1,625,342,576,127.13/1,433,509.32
  6. Step 6: Final answer
    x = 1,133,820.72

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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.