Finding the Fourth Proportional to 1,008,021,417.08, 1,512,032,125.62 and 317,998,422.68
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Solution
The fourth proportional to 1,008,021,417.08, 1,512,032,125.62 and 317,998,422.68 is: 476,997,634.01
Step by Step Solution
- Step 1: Write the proportion equation
1,008,021,417.08 : 1,512,032,125.62 = 317,998,422.68 : x - Step 2: Convert to fraction form
1,008,021,417.08/1,512,032,125.62 = 317,998,422.68/x - Step 3: Cross multiply
1,008,021,417.08x = 1,512,032,125.62 × 317,998,422.68 - Step 4: Simplify right side
1,008,021,417.08x = 480,823,830,979,497,472 - Step 5: Solve for x
x = 480,823,830,979,497,472/1,008,021,417.08 - Step 6: Final answer
x = 476,997,634.01
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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.