Home / 1,320,447.64-1,980,814.02-421,574.44

Finding the Fourth Proportional to 1,320,447.64, 1,980,814.02 and 421,574.44

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Solution

The fourth proportional to 1,320,447.64, 1,980,814.02 and 421,574.44 is: 632,407.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,447.64 : 1,980,814.02 = 421,574.44 : x
  2. Step 2: Convert to fraction form
    1,320,447.64/1,980,814.02 = 421,574.44/x
  3. Step 3: Cross multiply
    1,320,447.64x = 1,980,814.02 × 421,574.44
  4. Step 4: Simplify right side
    1,320,447.64x = 835,060,561,225.65
  5. Step 5: Solve for x
    x = 835,060,561,225.65/1,320,447.64
  6. Step 6: Final answer
    x = 632,407.17

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Why These Related Problems?

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