Finding the Fourth Proportional to 12,938,278,305.70, 19,411,000,639.35 and 8,584,713,633.70
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Solution
The fourth proportional to 12,938,278,305.70, 19,411,000,639.35 and 8,584,713,633.70 is: 12,879,447,936.98
Step by Step Solution
- Step 1: Write the proportion equation
12,938,278,305.70 : 19,411,000,639.35 = 8,584,713,633.70 : x - Step 2: Convert to fraction form
12,938,278,305.70/19,411,000,639.35 = 8,584,713,633.70/x - Step 3: Cross multiply
12,938,278,305.70x = 19,411,000,639.35 × 8,584,713,633.70 - Step 4: Simplify right side
12,938,278,305.70x = 166,637,881,832,387,346,432 - Step 5: Solve for x
x = 166,637,881,832,387,346,432/12,938,278,305.70 - Step 6: Final answer
x = 12,879,447,936.98
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1.5x scale
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.