Finding the Fourth Proportional to 1,083,445,013.12, 1,495,281,757.08 and 643,411,865.12
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Solution
The fourth proportional to 1,083,445,013.12, 1,495,281,757.08 and 643,411,865.12 is: 887,984,173.22
Step by Step Solution
- Step 1: Write the proportion equation
1,083,445,013.12 : 1,495,281,757.08 = 643,411,865.12 : x - Step 2: Convert to fraction form
1,083,445,013.12/1,495,281,757.08 = 643,411,865.12/x - Step 3: Cross multiply
1,083,445,013.12x = 1,495,281,757.08 × 643,411,865.12 - Step 4: Simplify right side
1,083,445,013.12x = 962,082,024,202,753,536 - Step 5: Solve for x
x = 962,082,024,202,753,536/1,083,445,013.12 - Step 6: Final answer
x = 887,984,173.22
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1.5x scale
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.