Finding the Fourth Proportional to 780,272,446.35, 1,170,668,848.47 and 518,987,070.75
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Solution
The fourth proportional to 780,272,446.35, 1,170,668,848.47 and 518,987,070.75 is: 778,653,660.43
Step by Step Solution
- Step 1: Write the proportion equation
780,272,446.35 : 1,170,668,848.47 = 518,987,070.75 : x - Step 2: Convert to fraction form
780,272,446.35/1,170,668,848.47 = 518,987,070.75/x - Step 3: Cross multiply
780,272,446.35x = 1,170,668,848.47 × 518,987,070.75 - Step 4: Simplify right side
780,272,446.35x = 607,561,996,485,720,960 - Step 5: Solve for x
x = 607,561,996,485,720,960/780,272,446.35 - Step 6: Final answer
x = 778,653,660.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.