Finding the Fourth Proportional to 917,999,611.94, 1,266,884,412.08 and 516,239,803.20
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Solution
The fourth proportional to 917,999,611.94, 1,266,884,412.08 and 516,239,803.20 is: 712,436,204.84
Step by Step Solution
- Step 1: Write the proportion equation
917,999,611.94 : 1,266,884,412.08 = 516,239,803.20 : x - Step 2: Convert to fraction form
917,999,611.94/1,266,884,412.08 = 516,239,803.20/x - Step 3: Cross multiply
917,999,611.94x = 1,266,884,412.08 × 516,239,803.20 - Step 4: Simplify right side
917,999,611.94x = 654,016,159,569,326,848 - Step 5: Solve for x
x = 654,016,159,569,326,848/917,999,611.94 - Step 6: Final answer
x = 712,436,204.84
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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.