Finding the Fourth Proportional to 1,239,635,014.56, 1,710,641,125.44 and 710,619,737.76
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Solution
The fourth proportional to 1,239,635,014.56, 1,710,641,125.44 and 710,619,737.76 is: 980,623,597.82
Step by Step Solution
- Step 1: Write the proportion equation
1,239,635,014.56 : 1,710,641,125.44 = 710,619,737.76 : x - Step 2: Convert to fraction form
1,239,635,014.56/1,710,641,125.44 = 710,619,737.76/x - Step 3: Cross multiply
1,239,635,014.56x = 1,710,641,125.44 × 710,619,737.76 - Step 4: Simplify right side
1,239,635,014.56x = 1,215,615,347,961,644,032 - Step 5: Solve for x
x = 1,215,615,347,961,644,032/1,239,635,014.56 - Step 6: Final answer
x = 980,623,597.82
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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.