Finding the Fourth Proportional to 520,903,133.73, 718,819,925.99 and 309,219,012.72
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Solution
The fourth proportional to 520,903,133.73, 718,819,925.99 and 309,219,012.72 is: 426,706,566.82
Step by Step Solution
- Step 1: Write the proportion equation
520,903,133.73 : 718,819,925.99 = 309,219,012.72 : x - Step 2: Convert to fraction form
520,903,133.73/718,819,925.99 = 309,219,012.72/x - Step 3: Cross multiply
520,903,133.73x = 718,819,925.99 × 309,219,012.72 - Step 4: Simplify right side
520,903,133.73x = 222,272,787,838,091,296 - Step 5: Solve for x
x = 222,272,787,838,091,296/520,903,133.73 - Step 6: Final answer
x = 426,706,566.82
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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.