Finding the Fourth Proportional to 10,205,313.75, 15,307,970.63 and 4,221,681.75
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Solution
The fourth proportional to 10,205,313.75, 15,307,970.63 and 4,221,681.75 is: 6,332,522.63
Step by Step Solution
- Step 1: Write the proportion equation
10,205,313.75 : 15,307,970.63 = 4,221,681.75 : x - Step 2: Convert to fraction form
10,205,313.75/15,307,970.63 = 4,221,681.75/x - Step 3: Cross multiply
10,205,313.75x = 15,307,970.63 × 4,221,681.75 - Step 4: Simplify right side
10,205,313.75x = 64,625,380,217,098.59 - Step 5: Solve for x
x = 64,625,380,217,098.59/10,205,313.75 - Step 6: Final answer
x = 6,332,522.63
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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.