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Finding the Fourth Proportional to 2,425,985.40, 3,638,978.10 and 1,005,893.40

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Solution

The fourth proportional to 2,425,985.40, 3,638,978.10 and 1,005,893.40 is: 1,508,840.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425,985.40 : 3,638,978.10 = 1,005,893.40 : x
  2. Step 2: Convert to fraction form
    2,425,985.40/3,638,978.10 = 1,005,893.40/x
  3. Step 3: Cross multiply
    2,425,985.40x = 3,638,978.10 × 1,005,893.40
  4. Step 4: Simplify right side
    2,425,985.40x = 3,660,424,053,534.54
  5. Step 5: Solve for x
    x = 3,660,424,053,534.54/2,425,985.40
  6. Step 6: Final answer
    x = 1,508,840.10

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1.5x scale

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.