Finding the Fourth Proportional to 1,302,919,309.44, 1,953,964,270.08 and 429,357,715.20
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Solution
The fourth proportional to 1,302,919,309.44, 1,953,964,270.08 and 429,357,715.20 is: 643,899,916.52
Step by Step Solution
- Step 1: Write the proportion equation
1,302,919,309.44 : 1,953,964,270.08 = 429,357,715.20 : x - Step 2: Convert to fraction form
1,302,919,309.44/1,953,964,270.08 = 429,357,715.20/x - Step 3: Cross multiply
1,302,919,309.44x = 1,953,964,270.08 × 429,357,715.20 - Step 4: Simplify right side
1,302,919,309.44x = 838,949,634,583,984,512 - Step 5: Solve for x
x = 838,949,634,583,984,512/1,302,919,309.44 - Step 6: Final answer
x = 643,899,916.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.