Finding the Fourth Proportional to 7,920,455,924.10, 11,880,683,886.15 and 3,988,642,829.70
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Solution
The fourth proportional to 7,920,455,924.10, 11,880,683,886.15 and 3,988,642,829.70 is: 5,982,964,244.55
Step by Step Solution
- Step 1: Write the proportion equation
7,920,455,924.10 : 11,880,683,886.15 = 3,988,642,829.70 : x - Step 2: Convert to fraction form
7,920,455,924.10/11,880,683,886.15 = 3,988,642,829.70/x - Step 3: Cross multiply
7,920,455,924.10x = 11,880,683,886.15 × 3,988,642,829.70 - Step 4: Simplify right side
7,920,455,924.10x = 47,387,804,594,424,528,896 - Step 5: Solve for x
x = 47,387,804,594,424,528,896/7,920,455,924.10 - Step 6: Final answer
x = 5,982,964,244.55
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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.