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Finding the Fourth Proportional to 2,789,570, 4,184,355 and 688,322

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Solution

The fourth proportional to 2,789,570, 4,184,355 and 688,322 is: 1,032,483

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789,570 : 4,184,355 = 688,322 : x
  2. Step 2: Convert to fraction form
    2,789,570/4,184,355 = 688,322/x
  3. Step 3: Cross multiply
    2,789,570x = 4,184,355 × 688,322
  4. Step 4: Simplify right side
    2,789,570x = 2,880,183,602,310
  5. Step 5: Solve for x
    x = 2,880,183,602,310/2,789,570
  6. Step 6: Final answer
    x = 1,032,483

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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.