Finding the Fourth Proportional to 1,357,139.66, 1,872,884.12 and 776,417.31
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Solution
The fourth proportional to 1,357,139.66, 1,872,884.12 and 776,417.31 is: 1,071,473.85
Step by Step Solution
- Step 1: Write the proportion equation
1,357,139.66 : 1,872,884.12 = 776,417.31 : x - Step 2: Convert to fraction form
1,357,139.66/1,872,884.12 = 776,417.31/x - Step 3: Cross multiply
1,357,139.66x = 1,872,884.12 × 776,417.31 - Step 4: Simplify right side
1,357,139.66x = 1,454,139,646,510.03 - Step 5: Solve for x
x = 1,454,139,646,510.03/1,357,139.66 - Step 6: Final answer
x = 1,071,473.85
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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.