Finding the Fourth Proportional to 976,349,595.84, 1,346,582,844.60 and 642,165,191.84
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Solution
The fourth proportional to 976,349,595.84, 1,346,582,844.60 and 642,165,191.84 is: 885,675,207.34
Step by Step Solution
- Step 1: Write the proportion equation
976,349,595.84 : 1,346,582,844.60 = 642,165,191.84 : x - Step 2: Convert to fraction form
976,349,595.84/1,346,582,844.60 = 642,165,191.84/x - Step 3: Cross multiply
976,349,595.84x = 1,346,582,844.60 × 642,165,191.84 - Step 4: Simplify right side
976,349,595.84x = 864,728,630,731,011,840 - Step 5: Solve for x
x = 864,728,630,731,011,840/976,349,595.84 - Step 6: Final answer
x = 885,675,207.34
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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.