Finding the Fourth Proportional to 898,964,605.05, 1,348,554,959.95 and 316,578,489.81
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Solution
The fourth proportional to 898,964,605.05, 1,348,554,959.95 and 316,578,489.81 is: 474,905,786.33
Step by Step Solution
- Step 1: Write the proportion equation
898,964,605.05 : 1,348,554,959.95 = 316,578,489.81 : x - Step 2: Convert to fraction form
898,964,605.05/1,348,554,959.95 = 316,578,489.81/x - Step 3: Cross multiply
898,964,605.05x = 1,348,554,959.95 × 316,578,489.81 - Step 4: Simplify right side
898,964,605.05x = 426,923,492,646,756,032 - Step 5: Solve for x
x = 426,923,492,646,756,032/898,964,605.05 - Step 6: Final answer
x = 474,905,786.33
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1.5x scale
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.