Finding the Fourth Proportional to 869,033,700.74, 1,199,289,236.15 and 472,579,877.36
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Solution
The fourth proportional to 869,033,700.74, 1,199,289,236.15 and 472,579,877.36 is: 652,172,590.84
Step by Step Solution
- Step 1: Write the proportion equation
869,033,700.74 : 1,199,289,236.15 = 472,579,877.36 : x - Step 2: Convert to fraction form
869,033,700.74/1,199,289,236.15 = 472,579,877.36/x - Step 3: Cross multiply
869,033,700.74x = 1,199,289,236.15 × 472,579,877.36 - Step 4: Simplify right side
869,033,700.74x = 566,759,960,138,935,168 - Step 5: Solve for x
x = 566,759,960,138,935,168/869,033,700.74 - Step 6: Final answer
x = 652,172,590.84
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.