Finding the Fourth Proportional to 420,307.74, 579,347.09 and 284,292.05
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Solution
The fourth proportional to 420,307.74, 579,347.09 and 284,292.05 is: 391,864.71
Step by Step Solution
- Step 1: Write the proportion equation
420,307.74 : 579,347.09 = 284,292.05 : x - Step 2: Convert to fraction form
420,307.74/579,347.09 = 284,292.05/x - Step 3: Cross multiply
420,307.74x = 579,347.09 × 284,292.05 - Step 4: Simplify right side
420,307.74x = 164,703,771,904.54 - Step 5: Solve for x
x = 164,703,771,904.54/420,307.74 - Step 6: Final answer
x = 391,864.71
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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.