Finding the Fourth Proportional to 688,648.20, 1,032,972.30 and 239,219.70
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Solution
The fourth proportional to 688,648.20, 1,032,972.30 and 239,219.70 is: 358,829.55
Step by Step Solution
- Step 1: Write the proportion equation
688,648.20 : 1,032,972.30 = 239,219.70 : x - Step 2: Convert to fraction form
688,648.20/1,032,972.30 = 239,219.70/x - Step 3: Cross multiply
688,648.20x = 1,032,972.30 × 239,219.70 - Step 4: Simplify right side
688,648.20x = 247,107,323,714.31 - Step 5: Solve for x
x = 247,107,323,714.31/688,648.20 - Step 6: Final answer
x = 358,829.55
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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.