Finding the Fourth Proportional to 442,896,358.40, 664,344,537.60 and 420,725,427.20
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Solution
The fourth proportional to 442,896,358.40, 664,344,537.60 and 420,725,427.20 is: 631,088,140.80
Step by Step Solution
- Step 1: Write the proportion equation
442,896,358.40 : 664,344,537.60 = 420,725,427.20 : x - Step 2: Convert to fraction form
442,896,358.40/664,344,537.60 = 420,725,427.20/x - Step 3: Cross multiply
442,896,358.40x = 664,344,537.60 × 420,725,427.20 - Step 4: Simplify right side
442,896,358.40x = 279,506,639,389,746,464 - Step 5: Solve for x
x = 279,506,639,389,746,464/442,896,358.40 - Step 6: Final answer
x = 631,088,140.80
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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.