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Finding the Fourth Proportional to 618,528,699.90, 927,772,054.65 and 158,471,379.90

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Solution

The fourth proportional to 618,528,699.90, 927,772,054.65 and 158,471,379.90 is: 237,701,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,528,699.90 : 927,772,054.65 = 158,471,379.90 : x
  2. Step 2: Convert to fraction form
    618,528,699.90/927,772,054.65 = 158,471,379.90/x
  3. Step 3: Cross multiply
    618,528,699.90x = 927,772,054.65 × 158,471,379.90
  4. Step 4: Simplify right side
    618,528,699.90x = 147,025,317,733,043,712
  5. Step 5: Solve for x
    x = 147,025,317,733,043,712/618,528,699.90
  6. Step 6: Final answer
    x = 237,701,690.73

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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.