Home / 511,240,147.20-766,860,220.80-429,610,809.60

Finding the Fourth Proportional to 511,240,147.20, 766,860,220.80 and 429,610,809.60

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Solution

The fourth proportional to 511,240,147.20, 766,860,220.80 and 429,610,809.60 is: 644,416,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,240,147.20 : 766,860,220.80 = 429,610,809.60 : x
  2. Step 2: Convert to fraction form
    511,240,147.20/766,860,220.80 = 429,610,809.60/x
  3. Step 3: Cross multiply
    511,240,147.20x = 766,860,220.80 × 429,610,809.60
  4. Step 4: Simplify right side
    511,240,147.20x = 329,451,440,307,922,752
  5. Step 5: Solve for x
    x = 329,451,440,307,922,752/511,240,147.20
  6. Step 6: Final answer
    x = 644,416,214.40

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1.5x scale

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.