Finding the Fourth Proportional to 891,890,316, 1,230,808,636.08 and 500,758,138.08
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Solution
The fourth proportional to 891,890,316, 1,230,808,636.08 and 500,758,138.08 is: 691,046,230.55
Step by Step Solution
- Step 1: Write the proportion equation
891,890,316 : 1,230,808,636.08 = 500,758,138.08 : x - Step 2: Convert to fraction form
891,890,316/1,230,808,636.08 = 500,758,138.08/x - Step 3: Cross multiply
891,890,316x = 1,230,808,636.08 × 500,758,138.08 - Step 4: Simplify right side
891,890,316x = 616,337,440,936,205,056 - Step 5: Solve for x
x = 616,337,440,936,205,056/891,890,316 - Step 6: Final answer
x = 691,046,230.55
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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.