Finding the Fourth Proportional to 989,646,119.70, 1,365,630,334.70 and 543,586,430.76
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Solution
The fourth proportional to 989,646,119.70, 1,365,630,334.70 and 543,586,430.76 is: 750,104,612.75
Step by Step Solution
- Step 1: Write the proportion equation
989,646,119.70 : 1,365,630,334.70 = 543,586,430.76 : x - Step 2: Convert to fraction form
989,646,119.70/1,365,630,334.70 = 543,586,430.76/x - Step 3: Cross multiply
989,646,119.70x = 1,365,630,334.70 × 543,586,430.76 - Step 4: Simplify right side
989,646,119.70x = 742,338,119,377,157,248 - Step 5: Solve for x
x = 742,338,119,377,157,248/989,646,119.70 - Step 6: Final answer
x = 750,104,612.75
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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.