Home / 1,989,573.57-2,984,068.89-978,423.75

Finding the Fourth Proportional to 1,989,573.57, 2,984,068.89 and 978,423.75

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Solution

The fourth proportional to 1,989,573.57, 2,984,068.89 and 978,423.75 is: 1,467,492.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,573.57 : 2,984,068.89 = 978,423.75 : x
  2. Step 2: Convert to fraction form
    1,989,573.57/2,984,068.89 = 978,423.75/x
  3. Step 3: Cross multiply
    1,989,573.57x = 2,984,068.89 × 978,423.75
  4. Step 4: Simplify right side
    1,989,573.57x = 2,919,683,873,612.14
  5. Step 5: Solve for x
    x = 2,919,683,873,612.14/1,989,573.57
  6. Step 6: Final answer
    x = 1,467,492.29

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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.