Finding the Fourth Proportional to 508,901.70, 763,352.55 and 430,169.70
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Solution
The fourth proportional to 508,901.70, 763,352.55 and 430,169.70 is: 645,254.55
Step by Step Solution
- Step 1: Write the proportion equation
508,901.70 : 763,352.55 = 430,169.70 : x - Step 2: Convert to fraction form
508,901.70/763,352.55 = 430,169.70/x - Step 3: Cross multiply
508,901.70x = 763,352.55 × 430,169.70 - Step 4: Simplify right side
508,901.70x = 328,371,137,427.74 - Step 5: Solve for x
x = 328,371,137,427.74/508,901.70 - Step 6: Final answer
x = 645,254.55
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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.