Finding the Fourth Proportional to 839,291,242.20, 1,258,936,863.30 and 788,230,915.80
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Solution
The fourth proportional to 839,291,242.20, 1,258,936,863.30 and 788,230,915.80 is: 1,182,346,373.70
Step by Step Solution
- Step 1: Write the proportion equation
839,291,242.20 : 1,258,936,863.30 = 788,230,915.80 : x - Step 2: Convert to fraction form
839,291,242.20/1,258,936,863.30 = 788,230,915.80/x - Step 3: Cross multiply
839,291,242.20x = 1,258,936,863.30 × 788,230,915.80 - Step 4: Simplify right side
839,291,242.20x = 992,332,956,693,338,368 - Step 5: Solve for x
x = 992,332,956,693,338,368/839,291,242.20 - Step 6: Final answer
x = 1,182,346,373.70
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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.