Home / 1,290,819,520.86-1,932,221,256.59-699,140,208.39

Finding the Fourth Proportional to 1,290,819,520.86, 1,932,221,256.59 and 699,140,208.39

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Solution

The fourth proportional to 1,290,819,520.86, 1,932,221,256.59 and 699,140,208.39 is: 1,046,539,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,819,520.86 : 1,932,221,256.59 = 699,140,208.39 : x
  2. Step 2: Convert to fraction form
    1,290,819,520.86/1,932,221,256.59 = 699,140,208.39/x
  3. Step 3: Cross multiply
    1,290,819,520.86x = 1,932,221,256.59 × 699,140,208.39
  4. Step 4: Simplify right side
    1,290,819,520.86x = 1,350,893,571,987,920,128
  5. Step 5: Solve for x
    x = 1,350,893,571,987,920,128/1,290,819,520.86
  6. Step 6: Final answer
    x = 1,046,539,465.94

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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.