Finding the Fourth Proportional to 570,813,543.99, 787,788,037.44 and 319,985,681.31
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Solution
The fourth proportional to 570,813,543.99, 787,788,037.44 and 319,985,681.31 is: 441,616,872.17
Step by Step Solution
- Step 1: Write the proportion equation
570,813,543.99 : 787,788,037.44 = 319,985,681.31 : x - Step 2: Convert to fraction form
570,813,543.99/787,788,037.44 = 319,985,681.31/x - Step 3: Cross multiply
570,813,543.99x = 787,788,037.44 × 319,985,681.31 - Step 4: Simplify right side
570,813,543.99x = 252,080,891,888,106,208 - Step 5: Solve for x
x = 252,080,891,888,106,208/570,813,543.99 - Step 6: Final answer
x = 441,616,872.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.