Finding the Fourth Proportional to 868,759,639.20, 1,303,139,458.80 and 460,612,951.20
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Solution
The fourth proportional to 868,759,639.20, 1,303,139,458.80 and 460,612,951.20 is: 690,919,426.80
Step by Step Solution
- Step 1: Write the proportion equation
868,759,639.20 : 1,303,139,458.80 = 460,612,951.20 : x - Step 2: Convert to fraction form
868,759,639.20/1,303,139,458.80 = 460,612,951.20/x - Step 3: Cross multiply
868,759,639.20x = 1,303,139,458.80 × 460,612,951.20 - Step 4: Simplify right side
868,759,639.20x = 600,242,911,943,038,720 - Step 5: Solve for x
x = 600,242,911,943,038,720/868,759,639.20 - Step 6: Final answer
x = 690,919,426.80
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1.5x scale
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.