Finding the Fourth Proportional to 1,249,931.20, 1,724,899.60 and 698,646.18
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Solution
The fourth proportional to 1,249,931.20, 1,724,899.60 and 698,646.18 is: 964,128.68
Step by Step Solution
- Step 1: Write the proportion equation
1,249,931.20 : 1,724,899.60 = 698,646.18 : x - Step 2: Convert to fraction form
1,249,931.20/1,724,899.60 = 698,646.18/x - Step 3: Cross multiply
1,249,931.20x = 1,724,899.60 × 698,646.18 - Step 4: Simplify right side
1,249,931.20x = 1,205,094,516,423.53 - Step 5: Solve for x
x = 1,205,094,516,423.53/1,249,931.20 - Step 6: Final answer
x = 964,128.68
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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.