Finding the Fourth Proportional to 885,672,813.60, 1,328,509,220.40 and 679,048,552.80
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Solution
The fourth proportional to 885,672,813.60, 1,328,509,220.40 and 679,048,552.80 is: 1,018,572,829.20
Step by Step Solution
- Step 1: Write the proportion equation
885,672,813.60 : 1,328,509,220.40 = 679,048,552.80 : x - Step 2: Convert to fraction form
885,672,813.60/1,328,509,220.40 = 679,048,552.80/x - Step 3: Cross multiply
885,672,813.60x = 1,328,509,220.40 × 679,048,552.80 - Step 4: Simplify right side
885,672,813.60x = 902,122,263,494,076,288 - Step 5: Solve for x
x = 902,122,263,494,076,288/885,672,813.60 - Step 6: Final answer
x = 1,018,572,829.20
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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.