Finding the Fourth Proportional to 630,090.78, 869,547.09 and 358,170.06
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Solution
The fourth proportional to 630,090.78, 869,547.09 and 358,170.06 is: 494,287.08
Step by Step Solution
- Step 1: Write the proportion equation
630,090.78 : 869,547.09 = 358,170.06 : x - Step 2: Convert to fraction form
630,090.78/869,547.09 = 358,170.06/x - Step 3: Cross multiply
630,090.78x = 869,547.09 × 358,170.06 - Step 4: Simplify right side
630,090.78x = 311,445,733,398.13 - Step 5: Solve for x
x = 311,445,733,398.13/630,090.78 - Step 6: Final answer
x = 494,287.08
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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.