Home / 807,604,429.20-1,211,406,643.80-290,114,739.60

Finding the Fourth Proportional to 807,604,429.20, 1,211,406,643.80 and 290,114,739.60

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Solution

The fourth proportional to 807,604,429.20, 1,211,406,643.80 and 290,114,739.60 is: 435,172,109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,604,429.20 : 1,211,406,643.80 = 290,114,739.60 : x
  2. Step 2: Convert to fraction form
    807,604,429.20/1,211,406,643.80 = 290,114,739.60/x
  3. Step 3: Cross multiply
    807,604,429.20x = 1,211,406,643.80 × 290,114,739.60
  4. Step 4: Simplify right side
    807,604,429.20x = 351,446,923,015,746,944
  5. Step 5: Solve for x
    x = 351,446,923,015,746,944/807,604,429.20
  6. Step 6: Final answer
    x = 435,172,109.40

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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.