Home / 1,638,000.20-2,457,000.30-840,838.70

Finding the Fourth Proportional to 1,638,000.20, 2,457,000.30 and 840,838.70

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Solution

The fourth proportional to 1,638,000.20, 2,457,000.30 and 840,838.70 is: 1,261,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,000.20 : 2,457,000.30 = 840,838.70 : x
  2. Step 2: Convert to fraction form
    1,638,000.20/2,457,000.30 = 840,838.70/x
  3. Step 3: Cross multiply
    1,638,000.20x = 2,457,000.30 × 840,838.70
  4. Step 4: Simplify right side
    1,638,000.20x = 2,065,940,938,151.61
  5. Step 5: Solve for x
    x = 2,065,940,938,151.61/1,638,000.20
  6. Step 6: Final answer
    x = 1,261,258.05

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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.