Finding the Fourth Proportional to 1,249,349,947.29, 1,874,235,608.99 and 420,106,468.64
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Solution
The fourth proportional to 1,249,349,947.29, 1,874,235,608.99 and 420,106,468.64 is: 630,230,548.93
Step by Step Solution
- Step 1: Write the proportion equation
1,249,349,947.29 : 1,874,235,608.99 = 420,106,468.64 : x - Step 2: Convert to fraction form
1,249,349,947.29/1,874,235,608.99 = 420,106,468.64/x - Step 3: Cross multiply
1,249,349,947.29x = 1,874,235,608.99 × 420,106,468.64 - Step 4: Simplify right side
1,249,349,947.29x = 787,378,503,082,211,328 - Step 5: Solve for x
x = 787,378,503,082,211,328/1,249,349,947.29 - Step 6: Final answer
x = 630,230,548.93
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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.