Finding the Fourth Proportional to 977,138.90, 1,465,708.35 and 641,215.70
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Solution
The fourth proportional to 977,138.90, 1,465,708.35 and 641,215.70 is: 961,823.55
Step by Step Solution
- Step 1: Write the proportion equation
977,138.90 : 1,465,708.35 = 641,215.70 : x - Step 2: Convert to fraction form
977,138.90/1,465,708.35 = 641,215.70/x - Step 3: Cross multiply
977,138.90x = 1,465,708.35 × 641,215.70 - Step 4: Simplify right side
977,138.90x = 939,835,205,641.10 - Step 5: Solve for x
x = 939,835,205,641.10/977,138.90 - Step 6: Final answer
x = 961,823.55
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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.