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Finding the Fourth Proportional to 1,984,787.28, 2,977,679.88 and 637,070.40

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Solution

The fourth proportional to 1,984,787.28, 2,977,679.88 and 637,070.40 is: 955,765.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,787.28 : 2,977,679.88 = 637,070.40 : x
  2. Step 2: Convert to fraction form
    1,984,787.28/2,977,679.88 = 637,070.40/x
  3. Step 3: Cross multiply
    1,984,787.28x = 2,977,679.88 × 637,070.40
  4. Step 4: Simplify right side
    1,984,787.28x = 1,896,991,712,223.55
  5. Step 5: Solve for x
    x = 1,896,991,712,223.55/1,984,787.28
  6. Step 6: Final answer
    x = 955,765.75

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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.