Finding the Fourth Proportional to 6,984,949,312.50, 9,639,269,203.44 and 3,974,201,941.50
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Solution
The fourth proportional to 6,984,949,312.50, 9,639,269,203.44 and 3,974,201,941.50 is: 5,484,420,955.55
Step by Step Solution
- Step 1: Write the proportion equation
6,984,949,312.50 : 9,639,269,203.44 = 3,974,201,941.50 : x - Step 2: Convert to fraction form
6,984,949,312.50/9,639,269,203.44 = 3,974,201,941.50/x - Step 3: Cross multiply
6,984,949,312.50x = 9,639,269,203.44 × 3,974,201,941.50 - Step 4: Simplify right side
6,984,949,312.50x = 38,308,402,382,952,407,040 - Step 5: Solve for x
x = 38,308,402,382,952,407,040/6,984,949,312.50 - Step 6: Final answer
x = 5,484,420,955.55
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Double scale
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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.