Home / 648,798,345.60-973,303,660.80-211,972,214.40

Finding the Fourth Proportional to 648,798,345.60, 973,303,660.80 and 211,972,214.40

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Solution

The fourth proportional to 648,798,345.60, 973,303,660.80 and 211,972,214.40 is: 317,992,999.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,798,345.60 : 973,303,660.80 = 211,972,214.40 : x
  2. Step 2: Convert to fraction form
    648,798,345.60/973,303,660.80 = 211,972,214.40/x
  3. Step 3: Cross multiply
    648,798,345.60x = 973,303,660.80 × 211,972,214.40
  4. Step 4: Simplify right side
    648,798,345.60x = 206,313,332,263,402,464
  5. Step 5: Solve for x
    x = 206,313,332,263,402,464/648,798,345.60
  6. Step 6: Final answer
    x = 317,992,999.92

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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.