Home / 781,810,349.06-1,172,859,693.88-257,208,976.10

Finding the Fourth Proportional to 781,810,349.06, 1,172,859,693.88 and 257,208,976.10

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Solution

The fourth proportional to 781,810,349.06, 1,172,859,693.88 and 257,208,976.10 is: 385,860,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,810,349.06 : 1,172,859,693.88 = 257,208,976.10 : x
  2. Step 2: Convert to fraction form
    781,810,349.06/1,172,859,693.88 = 257,208,976.10/x
  3. Step 3: Cross multiply
    781,810,349.06x = 1,172,859,693.88 × 257,208,976.10
  4. Step 4: Simplify right side
    781,810,349.06x = 301,670,040,971,834,240
  5. Step 5: Solve for x
    x = 301,670,040,971,834,240/781,810,349.06
  6. Step 6: Final answer
    x = 385,860,894.95

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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.