Finding the Fourth Proportional to 579,420,201.20, 869,130,301.80 and 514,922,946.80
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Solution
The fourth proportional to 579,420,201.20, 869,130,301.80 and 514,922,946.80 is: 772,384,420.20
Step by Step Solution
- Step 1: Write the proportion equation
579,420,201.20 : 869,130,301.80 = 514,922,946.80 : x - Step 2: Convert to fraction form
579,420,201.20/869,130,301.80 = 514,922,946.80/x - Step 3: Cross multiply
579,420,201.20x = 869,130,301.80 × 514,922,946.80 - Step 4: Simplify right side
579,420,201.20x = 447,535,136,156,029,312 - Step 5: Solve for x
x = 447,535,136,156,029,312/579,420,201.20 - Step 6: Final answer
x = 772,384,420.20
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Double scale
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Similar ratio
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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.