Finding the Fourth Proportional to 983,762,828.80, 1,475,431,666.80 and 431,064,188.80
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Solution
The fourth proportional to 983,762,828.80, 1,475,431,666.80 and 431,064,188.80 is: 646,503,136.69
Step by Step Solution
- Step 1: Write the proportion equation
983,762,828.80 : 1,475,431,666.80 = 431,064,188.80 : x - Step 2: Convert to fraction form
983,762,828.80/1,475,431,666.80 = 431,064,188.80/x - Step 3: Cross multiply
983,762,828.80x = 1,475,431,666.80 × 431,064,188.80 - Step 4: Simplify right side
983,762,828.80x = 636,005,754,578,973,952 - Step 5: Solve for x
x = 636,005,754,578,973,952/983,762,828.80 - Step 6: Final answer
x = 646,503,136.69
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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.