Finding the Fourth Proportional to 791,969,904.80, 1,187,817,862.80 and 209,712,515.84
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Solution
The fourth proportional to 791,969,904.80, 1,187,817,862.80 and 209,712,515.84 is: 314,532,497.84
Step by Step Solution
- Step 1: Write the proportion equation
791,969,904.80 : 1,187,817,862.80 = 209,712,515.84 : x - Step 2: Convert to fraction form
791,969,904.80/1,187,817,862.80 = 209,712,515.84/x - Step 3: Cross multiply
791,969,904.80x = 1,187,817,862.80 × 209,712,515.84 - Step 4: Simplify right side
791,969,904.80x = 249,100,272,367,479,936 - Step 5: Solve for x
x = 249,100,272,367,479,936/791,969,904.80 - Step 6: Final answer
x = 314,532,497.84
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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.