Finding the Fourth Proportional to 771,078,706.74, 1,064,964,728.70 and 519,749,629.02
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Solution
The fourth proportional to 771,078,706.74, 1,064,964,728.70 and 519,749,629.02 is: 717,845,036.86
Step by Step Solution
- Step 1: Write the proportion equation
771,078,706.74 : 1,064,964,728.70 = 519,749,629.02 : x - Step 2: Convert to fraction form
771,078,706.74/1,064,964,728.70 = 519,749,629.02/x - Step 3: Cross multiply
771,078,706.74x = 1,064,964,728.70 × 519,749,629.02 - Step 4: Simplify right side
771,078,706.74x = 553,515,022,661,209,920 - Step 5: Solve for x
x = 553,515,022,661,209,920/771,078,706.74 - Step 6: Final answer
x = 717,845,036.86
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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.