Finding the Fourth Proportional to 398,411,087.55, 596,816,281.95 and 198,387,763.81
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Solution
The fourth proportional to 398,411,087.55, 596,816,281.95 and 198,387,763.81 is: 297,183,113.82
Step by Step Solution
- Step 1: Write the proportion equation
398,411,087.55 : 596,816,281.95 = 198,387,763.81 : x - Step 2: Convert to fraction form
398,411,087.55/596,816,281.95 = 198,387,763.81/x - Step 3: Cross multiply
398,411,087.55x = 596,816,281.95 × 198,387,763.81 - Step 4: Simplify right side
398,411,087.55x = 118,401,047,577,482,960 - Step 5: Solve for x
x = 118,401,047,577,482,960/398,411,087.55 - Step 6: Final answer
x = 297,183,113.82
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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.