Finding the Fourth Proportional to 901,499,370.92, 1,245,236,129.16 and 745,496,636.84
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Solution
The fourth proportional to 901,499,370.92, 1,245,236,129.16 and 745,496,636.84 is: 1,029,750,409.49
Step by Step Solution
- Step 1: Write the proportion equation
901,499,370.92 : 1,245,236,129.16 = 745,496,636.84 : x - Step 2: Convert to fraction form
901,499,370.92/1,245,236,129.16 = 745,496,636.84/x - Step 3: Cross multiply
901,499,370.92x = 1,245,236,129.16 × 745,496,636.84 - Step 4: Simplify right side
901,499,370.92x = 928,319,346,360,439,936 - Step 5: Solve for x
x = 928,319,346,360,439,936/901,499,370.92 - Step 6: Final answer
x = 1,029,750,409.49
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Double scale
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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.