Finding the Fourth Proportional to 513,737,897.40, 708,958,303.11 and 278,788,557.53
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Solution
The fourth proportional to 513,737,897.40, 708,958,303.11 and 278,788,557.53 is: 384,728,211.94
Step by Step Solution
- Step 1: Write the proportion equation
513,737,897.40 : 708,958,303.11 = 278,788,557.53 : x - Step 2: Convert to fraction form
513,737,897.40/708,958,303.11 = 278,788,557.53/x - Step 3: Cross multiply
513,737,897.40x = 708,958,303.11 × 278,788,557.53 - Step 4: Simplify right side
513,737,897.40x = 197,649,462,674,725,824 - Step 5: Solve for x
x = 197,649,462,674,725,824/513,737,897.40 - Step 6: Final answer
x = 384,728,211.94
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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.