Finding the Fourth Proportional to 839,291,235.20, 1,258,936,852.80 and 788,230,908.80
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Solution
The fourth proportional to 839,291,235.20, 1,258,936,852.80 and 788,230,908.80 is: 1,182,346,363.20
Step by Step Solution
- Step 1: Write the proportion equation
839,291,235.20 : 1,258,936,852.80 = 788,230,908.80 : x - Step 2: Convert to fraction form
839,291,235.20/1,258,936,852.80 = 788,230,908.80/x - Step 3: Cross multiply
839,291,235.20x = 1,258,936,852.80 × 788,230,908.80 - Step 4: Simplify right side
839,291,235.20x = 992,332,939,604,355,712 - Step 5: Solve for x
x = 992,332,939,604,355,712/839,291,235.20 - Step 6: Final answer
x = 1,182,346,363.20
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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.