Finding the Fourth Proportional to 935,869,833.12, 1,291,573,083.60 and 518,220,976.80
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Solution
The fourth proportional to 935,869,833.12, 1,291,573,083.60 and 518,220,976.80 is: 715,185,211.99
Step by Step Solution
- Step 1: Write the proportion equation
935,869,833.12 : 1,291,573,083.60 = 518,220,976.80 : x - Step 2: Convert to fraction form
935,869,833.12/1,291,573,083.60 = 518,220,976.80/x - Step 3: Cross multiply
935,869,833.12x = 1,291,573,083.60 × 518,220,976.80 - Step 4: Simplify right side
935,869,833.12x = 669,320,264,991,779,968 - Step 5: Solve for x
x = 669,320,264,991,779,968/935,869,833.12 - Step 6: Final answer
x = 715,185,211.99
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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.