Finding the Fourth Proportional to 970,360,855.20, 1,455,541,282.80 and 865,552,816.80
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Solution
The fourth proportional to 970,360,855.20, 1,455,541,282.80 and 865,552,816.80 is: 1,298,329,225.20
Step by Step Solution
- Step 1: Write the proportion equation
970,360,855.20 : 1,455,541,282.80 = 865,552,816.80 : x - Step 2: Convert to fraction form
970,360,855.20/1,455,541,282.80 = 865,552,816.80/x - Step 3: Cross multiply
970,360,855.20x = 1,455,541,282.80 × 865,552,816.80 - Step 4: Simplify right side
970,360,855.20x = 1,259,847,857,296,225,280 - Step 5: Solve for x
x = 1,259,847,857,296,225,280/970,360,855.20 - Step 6: Final answer
x = 1,298,329,225.20
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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.