Finding the Fourth Proportional to 1,217,999,206.44, 1,680,840,148.14 and 661,082,368.32
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Solution
The fourth proportional to 1,217,999,206.44, 1,680,840,148.14 and 661,082,368.32 is: 912,294,343.07
Step by Step Solution
- Step 1: Write the proportion equation
1,217,999,206.44 : 1,680,840,148.14 = 661,082,368.32 : x - Step 2: Convert to fraction form
1,217,999,206.44/1,680,840,148.14 = 661,082,368.32/x - Step 3: Cross multiply
1,217,999,206.44x = 1,680,840,148.14 × 661,082,368.32 - Step 4: Simplify right side
1,217,999,206.44x = 1,111,173,785,899,730,944 - Step 5: Solve for x
x = 1,111,173,785,899,730,944/1,217,999,206.44 - Step 6: Final answer
x = 912,294,343.07
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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.