Finding the Fourth Proportional to 910,816,470.99, 1,256,911,488.32 and 493,125,365.07
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Solution
The fourth proportional to 910,816,470.99, 1,256,911,488.32 and 493,125,365.07 is: 680,504,751.81
Step by Step Solution
- Step 1: Write the proportion equation
910,816,470.99 : 1,256,911,488.32 = 493,125,365.07 : x - Step 2: Convert to fraction form
910,816,470.99/1,256,911,488.32 = 493,125,365.07/x - Step 3: Cross multiply
910,816,470.99x = 1,256,911,488.32 × 493,125,365.07 - Step 4: Simplify right side
910,816,470.99x = 619,814,936,536,011,392 - Step 5: Solve for x
x = 619,814,936,536,011,392/910,816,470.99 - Step 6: Final answer
x = 680,504,751.81
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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.