Home / 1,236,507,638.40-1,854,985,406.40-621,544,233.60

Finding the Fourth Proportional to 1,236,507,638.40, 1,854,985,406.40 and 621,544,233.60

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Solution

The fourth proportional to 1,236,507,638.40, 1,854,985,406.40 and 621,544,233.60 is: 932,428,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,507,638.40 : 1,854,985,406.40 = 621,544,233.60 : x
  2. Step 2: Convert to fraction form
    1,236,507,638.40/1,854,985,406.40 = 621,544,233.60/x
  3. Step 3: Cross multiply
    1,236,507,638.40x = 1,854,985,406.40 × 621,544,233.60
  4. Step 4: Simplify right side
    1,236,507,638.40x = 1,152,955,482,760,072,704
  5. Step 5: Solve for x
    x = 1,152,955,482,760,072,704/1,236,507,638.40
  6. Step 6: Final answer
    x = 932,428,920.74

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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.