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Finding the Fourth Proportional to 661,992,765.32, 913,550,012.72 and 383,695,714.06

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Solution

The fourth proportional to 661,992,765.32, 913,550,012.72 and 383,695,714.06 is: 529,500,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,992,765.32 : 913,550,012.72 = 383,695,714.06 : x
  2. Step 2: Convert to fraction form
    661,992,765.32/913,550,012.72 = 383,695,714.06/x
  3. Step 3: Cross multiply
    661,992,765.32x = 913,550,012.72 × 383,695,714.06
  4. Step 4: Simplify right side
    661,992,765.32x = 350,525,224,457,358,976
  5. Step 5: Solve for x
    x = 350,525,224,457,358,976/661,992,765.32
  6. Step 6: Final answer
    x = 529,500,083.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.