Finding the Fourth Proportional to 1,186,392,973.11, 1,778,343,726.65 and 399,173,343.45
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Solution
The fourth proportional to 1,186,392,973.11, 1,778,343,726.65 and 399,173,343.45 is: 598,340,876.30
Step by Step Solution
- Step 1: Write the proportion equation
1,186,392,973.11 : 1,778,343,726.65 = 399,173,343.45 : x - Step 2: Convert to fraction form
1,186,392,973.11/1,778,343,726.65 = 399,173,343.45/x - Step 3: Cross multiply
1,186,392,973.11x = 1,778,343,726.65 × 399,173,343.45 - Step 4: Simplify right side
1,186,392,973.11x = 709,867,411,168,217,472 - Step 5: Solve for x
x = 709,867,411,168,217,472/1,186,392,973.11 - Step 6: Final answer
x = 598,340,876.30
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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.