Finding the Fourth Proportional to 840,148,245.30, 1,260,222,367.95 and 355,411,067.70
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Solution
The fourth proportional to 840,148,245.30, 1,260,222,367.95 and 355,411,067.70 is: 533,116,601.55
Step by Step Solution
- Step 1: Write the proportion equation
840,148,245.30 : 1,260,222,367.95 = 355,411,067.70 : x - Step 2: Convert to fraction form
840,148,245.30/1,260,222,367.95 = 355,411,067.70/x - Step 3: Cross multiply
840,148,245.30x = 1,260,222,367.95 × 355,411,067.70 - Step 4: Simplify right side
840,148,245.30x = 447,896,977,332,531,776 - Step 5: Solve for x
x = 447,896,977,332,531,776/840,148,245.30 - Step 6: Final answer
x = 533,116,601.55
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Double scale
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Similar ratio
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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.