Finding the Fourth Proportional to 986,898,124.80, 1,480,347,187.20 and 831,929,929.20
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Solution
The fourth proportional to 986,898,124.80, 1,480,347,187.20 and 831,929,929.20 is: 1,247,894,893.80
Step by Step Solution
- Step 1: Write the proportion equation
986,898,124.80 : 1,480,347,187.20 = 831,929,929.20 : x - Step 2: Convert to fraction form
986,898,124.80/1,480,347,187.20 = 831,929,929.20/x - Step 3: Cross multiply
986,898,124.80x = 1,480,347,187.20 × 831,929,929.20 - Step 4: Simplify right side
986,898,124.80x = 1,231,545,130,638,715,136 - Step 5: Solve for x
x = 1,231,545,130,638,715,136/986,898,124.80 - Step 6: Final answer
x = 1,247,894,893.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.