Home / 809,816,619.03-1,117,548,012.02-438,539,290.71

Finding the Fourth Proportional to 809,816,619.03, 1,117,548,012.02 and 438,539,290.71

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Solution

The fourth proportional to 809,816,619.03, 1,117,548,012.02 and 438,539,290.71 is: 605,184,804.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,619.03 : 1,117,548,012.02 = 438,539,290.71 : x
  2. Step 2: Convert to fraction form
    809,816,619.03/1,117,548,012.02 = 438,539,290.71/x
  3. Step 3: Cross multiply
    809,816,619.03x = 1,117,548,012.02 × 438,539,290.71
  4. Step 4: Simplify right side
    809,816,619.03x = 490,088,712,523,428,672
  5. Step 5: Solve for x
    x = 490,088,712,523,428,672/809,816,619.03
  6. Step 6: Final answer
    x = 605,184,804.81

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Double scale
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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.