Home / 1,638,208.40-2,457,312.60-1,478,776.10

Finding the Fourth Proportional to 1,638,208.40, 2,457,312.60 and 1,478,776.10

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Solution

The fourth proportional to 1,638,208.40, 2,457,312.60 and 1,478,776.10 is: 2,218,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,208.40 : 2,457,312.60 = 1,478,776.10 : x
  2. Step 2: Convert to fraction form
    1,638,208.40/2,457,312.60 = 1,478,776.10/x
  3. Step 3: Cross multiply
    1,638,208.40x = 2,457,312.60 × 1,478,776.10
  4. Step 4: Simplify right side
    1,638,208.40x = 3,633,815,143,108.86
  5. Step 5: Solve for x
    x = 3,633,815,143,108.86/1,638,208.40
  6. Step 6: Final answer
    x = 2,218,164.15

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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.