Finding the Fourth Proportional to 1,316,344,462.80, 1,974,516,694.20 and 442,655,458.80
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Solution
The fourth proportional to 1,316,344,462.80, 1,974,516,694.20 and 442,655,458.80 is: 663,983,188.20
Step by Step Solution
- Step 1: Write the proportion equation
1,316,344,462.80 : 1,974,516,694.20 = 442,655,458.80 : x - Step 2: Convert to fraction form
1,316,344,462.80/1,974,516,694.20 = 442,655,458.80/x - Step 3: Cross multiply
1,316,344,462.80x = 1,974,516,694.20 × 442,655,458.80 - Step 4: Simplify right side
1,316,344,462.80x = 874,030,593,179,360,384 - Step 5: Solve for x
x = 874,030,593,179,360,384/1,316,344,462.80 - Step 6: Final answer
x = 663,983,188.20
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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.