Home / 809,816,611.53-1,117,548,001.67-438,539,283.21

Finding the Fourth Proportional to 809,816,611.53, 1,117,548,001.67 and 438,539,283.21

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Solution

The fourth proportional to 809,816,611.53, 1,117,548,001.67 and 438,539,283.21 is: 605,184,794.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,611.53 : 1,117,548,001.67 = 438,539,283.21 : x
  2. Step 2: Convert to fraction form
    809,816,611.53/1,117,548,001.67 = 438,539,283.21/x
  3. Step 3: Cross multiply
    809,816,611.53x = 1,117,548,001.67 × 438,539,283.21
  4. Step 4: Simplify right side
    809,816,611.53x = 490,088,699,602,936,960
  5. Step 5: Solve for x
    x = 490,088,699,602,936,960/809,816,611.53
  6. Step 6: Final answer
    x = 605,184,794.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.