Finding the Fourth Proportional to 690,713,542.08, 953,281,910.88 and 439,737,763.68
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Solution
The fourth proportional to 690,713,542.08, 953,281,910.88 and 439,737,763.68 is: 606,900,010.07
Step by Step Solution
- Step 1: Write the proportion equation
690,713,542.08 : 953,281,910.88 = 439,737,763.68 : x - Step 2: Convert to fraction form
690,713,542.08/953,281,910.88 = 439,737,763.68/x - Step 3: Cross multiply
690,713,542.08x = 953,281,910.88 × 439,737,763.68 - Step 4: Simplify right side
690,713,542.08x = 419,194,055,646,968,256 - Step 5: Solve for x
x = 419,194,055,646,968,256/690,713,542.08 - Step 6: Final answer
x = 606,900,010.07
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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.