Finding the Fourth Proportional to 910,700,909.70, 1,256,767,675.86 and 493,013,194.99
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Solution
The fourth proportional to 910,700,909.70, 1,256,767,675.86 and 493,013,194.99 is: 680,358,436.71
Step by Step Solution
- Step 1: Write the proportion equation
910,700,909.70 : 1,256,767,675.86 = 493,013,194.99 : x - Step 2: Convert to fraction form
910,700,909.70/1,256,767,675.86 = 493,013,194.99/x - Step 3: Cross multiply
910,700,909.70x = 1,256,767,675.86 × 493,013,194.99 - Step 4: Simplify right side
910,700,909.70x = 619,603,047,235,895,296 - Step 5: Solve for x
x = 619,603,047,235,895,296/910,700,909.70 - Step 6: Final answer
x = 680,358,436.71
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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.