Finding the Fourth Proportional to 664,320,355.20, 996,480,532.80 and 634,087,267.20
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Solution
The fourth proportional to 664,320,355.20, 996,480,532.80 and 634,087,267.20 is: 951,130,900.80
Step by Step Solution
- Step 1: Write the proportion equation
664,320,355.20 : 996,480,532.80 = 634,087,267.20 : x - Step 2: Convert to fraction form
664,320,355.20/996,480,532.80 = 634,087,267.20/x - Step 3: Cross multiply
664,320,355.20x = 996,480,532.80 × 634,087,267.20 - Step 4: Simplify right side
664,320,355.20x = 631,855,617,861,152,000 - Step 5: Solve for x
x = 631,855,617,861,152,000/664,320,355.20 - Step 6: Final answer
x = 951,130,900.80
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Double scale
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Similar ratio
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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.