Finding the Fourth Proportional to 930,860,136.39, 1,284,596,887.46 and 513,187,368.47
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Solution
The fourth proportional to 930,860,136.39, 1,284,596,887.46 and 513,187,368.47 is: 708,204,025.98
Step by Step Solution
- Step 1: Write the proportion equation
930,860,136.39 : 1,284,596,887.46 = 513,187,368.47 : x - Step 2: Convert to fraction form
930,860,136.39/1,284,596,887.46 = 513,187,368.47/x - Step 3: Cross multiply
930,860,136.39x = 1,284,596,887.46 × 513,187,368.47 - Step 4: Simplify right side
930,860,136.39x = 659,238,896,211,361,152 - Step 5: Solve for x
x = 659,238,896,211,361,152/930,860,136.39 - Step 6: Final answer
x = 708,204,025.98
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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.