Finding the Fourth Proportional to 1,225,065,819,135.40, 1,690,739,076,324.80 and 697,243,549,360.75
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Solution
The fourth proportional to 1,225,065,819,135.40, 1,690,739,076,324.80 and 697,243,549,360.75 is: 962,280,471,959.95
Step by Step Solution
- Step 1: Write the proportion equation
1,225,065,819,135.40 : 1,690,739,076,324.80 = 697,243,549,360.75 : x - Step 2: Convert to fraction form
1,225,065,819,135.40/1,690,739,076,324.80 = 697,243,549,360.75/x - Step 3: Cross multiply
1,225,065,819,135.40x = 1,690,739,076,324.80 × 697,243,549,360.75 - Step 4: Simplify right side
1,225,065,819,135.40x = 1,178,856,914,619,619,642,179,584 - Step 5: Solve for x
x = 1,178,856,914,619,619,642,179,584/1,225,065,819,135.40 - Step 6: Final answer
x = 962,280,471,959.95
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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.