Finding the Fourth Proportional to 1,249,353,996.80, 1,874,030,995.20 and 637,133,964.80
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Solution
The fourth proportional to 1,249,353,996.80, 1,874,030,995.20 and 637,133,964.80 is: 955,700,947.20
Step by Step Solution
- Step 1: Write the proportion equation
1,249,353,996.80 : 1,874,030,995.20 = 637,133,964.80 : x - Step 2: Convert to fraction form
1,249,353,996.80/1,874,030,995.20 = 637,133,964.80/x - Step 3: Cross multiply
1,249,353,996.80x = 1,874,030,995.20 × 637,133,964.80 - Step 4: Simplify right side
1,249,353,996.80x = 1,194,008,798,129,865,728 - Step 5: Solve for x
x = 1,194,008,798,129,865,728/1,249,353,996.80 - Step 6: Final answer
x = 955,700,947.20
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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.