Finding the Fourth Proportional to 640,068.18, 883,320.93 and 368,136.15
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Solution
The fourth proportional to 640,068.18, 883,320.93 and 368,136.15 is: 508,043.32
Step by Step Solution
- Step 1: Write the proportion equation
640,068.18 : 883,320.93 = 368,136.15 : x - Step 2: Convert to fraction form
640,068.18/883,320.93 = 368,136.15/x - Step 3: Cross multiply
640,068.18x = 883,320.93 × 368,136.15 - Step 4: Simplify right side
640,068.18x = 325,182,366,384.62 - Step 5: Solve for x
x = 325,182,366,384.62/640,068.18 - Step 6: Final answer
x = 508,043.32
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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.