Home / 647,353,929.40-970,393,164.90-319,879,985.20

Finding the Fourth Proportional to 647,353,929.40, 970,393,164.90 and 319,879,985.20

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Solution

The fourth proportional to 647,353,929.40, 970,393,164.90 and 319,879,985.20 is: 479,504,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,353,929.40 : 970,393,164.90 = 319,879,985.20 : x
  2. Step 2: Convert to fraction form
    647,353,929.40/970,393,164.90 = 319,879,985.20/x
  3. Step 3: Cross multiply
    647,353,929.40x = 970,393,164.90 × 319,879,985.20
  4. Step 4: Simplify right side
    647,353,929.40x = 310,409,351,226,393,152
  5. Step 5: Solve for x
    x = 310,409,351,226,393,152/647,353,929.40
  6. Step 6: Final answer
    x = 479,504,853.73

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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.