Finding the Fourth Proportional to 1,272,576,552.98, 1,756,128,117.67 and 736,750,814.21
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Solution
The fourth proportional to 1,272,576,552.98, 1,756,128,117.67 and 736,750,814.21 is: 1,016,700,187.90
Step by Step Solution
- Step 1: Write the proportion equation
1,272,576,552.98 : 1,756,128,117.67 = 736,750,814.21 : x - Step 2: Convert to fraction form
1,272,576,552.98/1,756,128,117.67 = 736,750,814.21/x - Step 3: Cross multiply
1,272,576,552.98x = 1,756,128,117.67 × 736,750,814.21 - Step 4: Simplify right side
1,272,576,552.98x = 1,293,828,820,539,824,640 - Step 5: Solve for x
x = 1,293,828,820,539,824,640/1,272,576,552.98 - Step 6: Final answer
x = 1,016,700,187.90
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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.