Finding the Fourth Proportional to 645,596,139.97, 891,197,575.39 and 434,025,673.71
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Solution
The fourth proportional to 645,596,139.97, 891,197,575.39 and 434,025,673.71 is: 599,140,242.82
Step by Step Solution
- Step 1: Write the proportion equation
645,596,139.97 : 891,197,575.39 = 434,025,673.71 : x - Step 2: Convert to fraction form
645,596,139.97/891,197,575.39 = 434,025,673.71/x - Step 3: Cross multiply
645,596,139.97x = 891,197,575.39 × 434,025,673.71 - Step 4: Simplify right side
645,596,139.97x = 386,802,628,064,563,840 - Step 5: Solve for x
x = 386,802,628,064,563,840/645,596,139.97 - Step 6: Final answer
x = 599,140,242.82
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1.5x scale
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.