Finding the Fourth Proportional to 1,545,103,681.30, 2,317,655,521.95 and 728,810,305.30
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Solution
The fourth proportional to 1,545,103,681.30, 2,317,655,521.95 and 728,810,305.30 is: 1,093,215,457.95
Step by Step Solution
- Step 1: Write the proportion equation
1,545,103,681.30 : 2,317,655,521.95 = 728,810,305.30 : x - Step 2: Convert to fraction form
1,545,103,681.30/2,317,655,521.95 = 728,810,305.30/x - Step 3: Cross multiply
1,545,103,681.30x = 2,317,655,521.95 × 728,810,305.30 - Step 4: Simplify right side
1,545,103,681.30x = 1,689,131,228,532,610,048 - Step 5: Solve for x
x = 1,689,131,228,532,610,048/1,545,103,681.30 - Step 6: Final answer
x = 1,093,215,457.95
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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.