Home / 521,461,009,477.35-782,280,626,684.45-214,983,253,191.65

Finding the Fourth Proportional to 521,461,009,477.35, 782,280,626,684.45 and 214,983,253,191.65

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Solution

The fourth proportional to 521,461,009,477.35, 782,280,626,684.45 and 214,983,253,191.65 is: 322,511,618,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,461,009,477.35 : 782,280,626,684.45 = 214,983,253,191.65 : x
  2. Step 2: Convert to fraction form
    521,461,009,477.35/782,280,626,684.45 = 214,983,253,191.65/x
  3. Step 3: Cross multiply
    521,461,009,477.35x = 782,280,626,684.45 × 214,983,253,191.65
  4. Step 4: Simplify right side
    521,461,009,477.35x = 168,177,234,033,425,740,988,416
  5. Step 5: Solve for x
    x = 168,177,234,033,425,740,988,416/521,461,009,477.35
  6. Step 6: Final answer
    x = 322,511,618,274.18

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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.