Finding the Fourth Proportional to 2,118,359,800.78, 3,178,254,792.75 and 937,777,430.14
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Solution
The fourth proportional to 2,118,359,800.78, 3,178,254,792.75 and 937,777,430.14 is: 1,406,982,709.35
Step by Step Solution
- Step 1: Write the proportion equation
2,118,359,800.78 : 3,178,254,792.75 = 937,777,430.14 : x - Step 2: Convert to fraction form
2,118,359,800.78/3,178,254,792.75 = 937,777,430.14/x - Step 3: Cross multiply
2,118,359,800.78x = 3,178,254,792.75 × 937,777,430.14 - Step 4: Simplify right side
2,118,359,800.78x = 2,980,495,611,875,233,280 - Step 5: Solve for x
x = 2,980,495,611,875,233,280/2,118,359,800.78 - Step 6: Final answer
x = 1,406,982,709.35
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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.