Finding the Fourth Proportional to 918,316,359.52, 1,267,264,473.80 and 516,429,989.08
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Solution
The fourth proportional to 918,316,359.52, 1,267,264,473.80 and 516,429,989.08 is: 712,666,578.99
Step by Step Solution
- Step 1: Write the proportion equation
918,316,359.52 : 1,267,264,473.80 = 516,429,989.08 : x - Step 2: Convert to fraction form
918,316,359.52/1,267,264,473.80 = 516,429,989.08/x - Step 3: Cross multiply
918,316,359.52x = 1,267,264,473.80 × 516,429,989.08 - Step 4: Simplify right side
918,316,359.52x = 654,453,378,366,005,888 - Step 5: Solve for x
x = 654,453,378,366,005,888/918,316,359.52 - Step 6: Final answer
x = 712,666,578.99
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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.