Finding the Fourth Proportional to 990,160,219.30, 1,485,240,328.95 and 878,238,744.70
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Solution
The fourth proportional to 990,160,219.30, 1,485,240,328.95 and 878,238,744.70 is: 1,317,358,117.05
Step by Step Solution
- Step 1: Write the proportion equation
990,160,219.30 : 1,485,240,328.95 = 878,238,744.70 : x - Step 2: Convert to fraction form
990,160,219.30/1,485,240,328.95 = 878,238,744.70/x - Step 3: Cross multiply
990,160,219.30x = 1,485,240,328.95 × 878,238,744.70 - Step 4: Simplify right side
990,160,219.30x = 1,304,395,602,074,863,104 - Step 5: Solve for x
x = 1,304,395,602,074,863,104/990,160,219.30 - Step 6: Final answer
x = 1,317,358,117.05
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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.