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Finding the Fourth Proportional to 659,315.94, 989,012.43 and 254,510.28

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Solution

The fourth proportional to 659,315.94, 989,012.43 and 254,510.28 is: 381,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315.94 : 989,012.43 = 254,510.28 : x
  2. Step 2: Convert to fraction form
    659,315.94/989,012.43 = 254,510.28/x
  3. Step 3: Cross multiply
    659,315.94x = 989,012.43 × 254,510.28
  4. Step 4: Simplify right side
    659,315.94x = 251,713,830,482.78
  5. Step 5: Solve for x
    x = 251,713,830,482.78/659,315.94
  6. Step 6: Final answer
    x = 381,780.29

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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.