Finding the Fourth Proportional to 956,669,369.58, 1,320,203,746.62 and 516,636,221.58
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Solution
The fourth proportional to 956,669,369.58, 1,320,203,746.62 and 516,636,221.58 is: 712,957,994.74
Step by Step Solution
- Step 1: Write the proportion equation
956,669,369.58 : 1,320,203,746.62 = 516,636,221.58 : x - Step 2: Convert to fraction form
956,669,369.58/1,320,203,746.62 = 516,636,221.58/x - Step 3: Cross multiply
956,669,369.58x = 1,320,203,746.62 × 516,636,221.58 - Step 4: Simplify right side
956,669,369.58x = 682,065,075,369,516,416 - Step 5: Solve for x
x = 682,065,075,369,516,416/956,669,369.58 - Step 6: Final answer
x = 712,957,994.74
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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.