Finding the Fourth Proportional to 497,918,354.42, 687,187,582.43 and 283,389,158.72
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Solution
The fourth proportional to 497,918,354.42, 687,187,582.43 and 283,389,158.72 is: 391,111,332.09
Step by Step Solution
- Step 1: Write the proportion equation
497,918,354.42 : 687,187,582.43 = 283,389,158.72 : x - Step 2: Convert to fraction form
497,918,354.42/687,187,582.43 = 283,389,158.72/x - Step 3: Cross multiply
497,918,354.42x = 687,187,582.43 × 283,389,158.72 - Step 4: Simplify right side
497,918,354.42x = 194,741,510,867,668,352 - Step 5: Solve for x
x = 194,741,510,867,668,352/497,918,354.42 - Step 6: Final answer
x = 391,111,332.09
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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.