Finding the Fourth Proportional to 645,485.24, 890,701.44 and 358,959.08
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Solution
The fourth proportional to 645,485.24, 890,701.44 and 358,959.08 is: 495,325.61
Step by Step Solution
- Step 1: Write the proportion equation
645,485.24 : 890,701.44 = 358,959.08 : x - Step 2: Convert to fraction form
645,485.24/890,701.44 = 358,959.08/x - Step 3: Cross multiply
645,485.24x = 890,701.44 × 358,959.08 - Step 4: Simplify right side
645,485.24x = 319,725,369,457.08 - Step 5: Solve for x
x = 319,725,369,457.08/645,485.24 - Step 6: Final answer
x = 495,325.61
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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.