Finding the Fourth Proportional to 680,911,747.20, 1,021,367,620.80 and 473,087,260.80
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Solution
The fourth proportional to 680,911,747.20, 1,021,367,620.80 and 473,087,260.80 is: 709,630,891.20
Step by Step Solution
- Step 1: Write the proportion equation
680,911,747.20 : 1,021,367,620.80 = 473,087,260.80 : x - Step 2: Convert to fraction form
680,911,747.20/1,021,367,620.80 = 473,087,260.80/x - Step 3: Cross multiply
680,911,747.20x = 1,021,367,620.80 × 473,087,260.80 - Step 4: Simplify right side
680,911,747.20x = 483,196,009,994,085,120 - Step 5: Solve for x
x = 483,196,009,994,085,120/680,911,747.20 - Step 6: Final answer
x = 709,630,891.20
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1.5x scale
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.