Finding the Fourth Proportional to 664,292,913.60, 996,439,370.40 and 319,163,318.40
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Solution
The fourth proportional to 664,292,913.60, 996,439,370.40 and 319,163,318.40 is: 478,744,977.60
Step by Step Solution
- Step 1: Write the proportion equation
664,292,913.60 : 996,439,370.40 = 319,163,318.40 : x - Step 2: Convert to fraction form
664,292,913.60/996,439,370.40 = 319,163,318.40/x - Step 3: Cross multiply
664,292,913.60x = 996,439,370.40 × 319,163,318.40 - Step 4: Simplify right side
664,292,913.60x = 318,026,896,041,270,720 - Step 5: Solve for x
x = 318,026,896,041,270,720/664,292,913.60 - Step 6: Final answer
x = 478,744,977.60
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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.