Home / 648,238,085.72-972,511,818.47-211,539,582.36

Finding the Fourth Proportional to 648,238,085.72, 972,511,818.47 and 211,539,582.36

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Solution

The fourth proportional to 648,238,085.72, 972,511,818.47 and 211,539,582.36 is: 317,359,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,238,085.72 : 972,511,818.47 = 211,539,582.36 : x
  2. Step 2: Convert to fraction form
    648,238,085.72/972,511,818.47 = 211,539,582.36/x
  3. Step 3: Cross multiply
    648,238,085.72x = 972,511,818.47 × 211,539,582.36
  4. Step 4: Simplify right side
    648,238,085.72x = 205,724,743,918,250,272
  5. Step 5: Solve for x
    x = 205,724,743,918,250,272/648,238,085.72
  6. Step 6: Final answer
    x = 317,359,853.50

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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.