Finding the Fourth Proportional to 645,132.08, 890,312.58 and 358,656.92
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Solution
The fourth proportional to 645,132.08, 890,312.58 and 358,656.92 is: 494,963.40
Step by Step Solution
- Step 1: Write the proportion equation
645,132.08 : 890,312.58 = 358,656.92 : x - Step 2: Convert to fraction form
645,132.08/890,312.58 = 358,656.92/x - Step 3: Cross multiply
645,132.08x = 890,312.58 × 358,656.92 - Step 4: Simplify right side
645,132.08x = 319,316,767,780.05 - Step 5: Solve for x
x = 319,316,767,780.05/645,132.08 - Step 6: Final answer
x = 494,963.40
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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.