Home / 830,629,162.80-1,245,943,744.20-345,891,985.20

Finding the Fourth Proportional to 830,629,162.80, 1,245,943,744.20 and 345,891,985.20

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Solution

The fourth proportional to 830,629,162.80, 1,245,943,744.20 and 345,891,985.20 is: 518,837,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,629,162.80 : 1,245,943,744.20 = 345,891,985.20 : x
  2. Step 2: Convert to fraction form
    830,629,162.80/1,245,943,744.20 = 345,891,985.20/x
  3. Step 3: Cross multiply
    830,629,162.80x = 1,245,943,744.20 × 345,891,985.20
  4. Step 4: Simplify right side
    830,629,162.80x = 430,961,955,128,859,008
  5. Step 5: Solve for x
    x = 430,961,955,128,859,008/830,629,162.80
  6. Step 6: Final answer
    x = 518,837,977.80

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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.