Finding the Fourth Proportional to 839,291,208.20, 1,258,936,812.30 and 788,230,881.80
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Solution
The fourth proportional to 839,291,208.20, 1,258,936,812.30 and 788,230,881.80 is: 1,182,346,322.70
Step by Step Solution
- Step 1: Write the proportion equation
839,291,208.20 : 1,258,936,812.30 = 788,230,881.80 : x - Step 2: Convert to fraction form
839,291,208.20/1,258,936,812.30 = 788,230,881.80/x - Step 3: Cross multiply
839,291,208.20x = 1,258,936,812.30 × 788,230,881.80 - Step 4: Simplify right side
839,291,208.20x = 992,332,873,689,709,952 - Step 5: Solve for x
x = 992,332,873,689,709,952/839,291,208.20 - Step 6: Final answer
x = 1,182,346,322.70
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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.