Finding the Fourth Proportional to 879,862,938.80, 1,319,794,408.20 and 866,258,049.20
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Solution
The fourth proportional to 879,862,938.80, 1,319,794,408.20 and 866,258,049.20 is: 1,299,387,073.80
Step by Step Solution
- Step 1: Write the proportion equation
879,862,938.80 : 1,319,794,408.20 = 866,258,049.20 : x - Step 2: Convert to fraction form
879,862,938.80/1,319,794,408.20 = 866,258,049.20/x - Step 3: Cross multiply
879,862,938.80x = 1,319,794,408.20 × 866,258,049.20 - Step 4: Simplify right side
879,862,938.80x = 1,143,282,529,392,400,640 - Step 5: Solve for x
x = 1,143,282,529,392,400,640/879,862,938.80 - Step 6: Final answer
x = 1,299,387,073.80
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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.