Finding the Fourth Proportional to 1,186,209,762.32, 1,636,969,445.99 and 657,572,408.84
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Solution
The fourth proportional to 1,186,209,762.32, 1,636,969,445.99 and 657,572,408.84 is: 907,449,909.77
Step by Step Solution
- Step 1: Write the proportion equation
1,186,209,762.32 : 1,636,969,445.99 = 657,572,408.84 : x - Step 2: Convert to fraction form
1,186,209,762.32/1,636,969,445.99 = 657,572,408.84/x - Step 3: Cross multiply
1,186,209,762.32x = 1,636,969,445.99 × 657,572,408.84 - Step 4: Simplify right side
1,186,209,762.32x = 1,076,425,941,785,651,840 - Step 5: Solve for x
x = 1,076,425,941,785,651,840/1,186,209,762.32 - Step 6: Final answer
x = 907,449,909.77
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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.