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Finding the Fourth Proportional to 618,366,901.60, 927,550,352.40 and 521,511,779.35

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Solution

The fourth proportional to 618,366,901.60, 927,550,352.40 and 521,511,779.35 is: 782,267,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,366,901.60 : 927,550,352.40 = 521,511,779.35 : x
  2. Step 2: Convert to fraction form
    618,366,901.60/927,550,352.40 = 521,511,779.35/x
  3. Step 3: Cross multiply
    618,366,901.60x = 927,550,352.40 × 521,511,779.35
  4. Step 4: Simplify right side
    618,366,901.60x = 483,728,434,716,843,584
  5. Step 5: Solve for x
    x = 483,728,434,716,843,584/618,366,901.60
  6. Step 6: Final answer
    x = 782,267,669.03

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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.