Finding the Fourth Proportional to 1,286,126.76, 1,774,726.98 and 742,437.70
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Solution
The fourth proportional to 1,286,126.76, 1,774,726.98 and 742,437.70 is: 1,024,490.17
Step by Step Solution
- Step 1: Write the proportion equation
1,286,126.76 : 1,774,726.98 = 742,437.70 : x - Step 2: Convert to fraction form
1,286,126.76/1,774,726.98 = 742,437.70/x - Step 3: Cross multiply
1,286,126.76x = 1,774,726.98 × 742,437.70 - Step 4: Simplify right side
1,286,126.76x = 1,317,624,217,159.15 - Step 5: Solve for x
x = 1,317,624,217,159.15/1,286,126.76 - Step 6: Final answer
x = 1,024,490.17
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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.