Finding the Fourth Proportional to 430,897,721.68, 646,437,370.26 and 139,742,141.68
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Solution
The fourth proportional to 430,897,721.68, 646,437,370.26 and 139,742,141.68 is: 209,642,655.41
Step by Step Solution
- Step 1: Write the proportion equation
430,897,721.68 : 646,437,370.26 = 139,742,141.68 : x - Step 2: Convert to fraction form
430,897,721.68/646,437,370.26 = 139,742,141.68/x - Step 3: Cross multiply
430,897,721.68x = 646,437,370.26 × 139,742,141.68 - Step 4: Simplify right side
430,897,721.68x = 90,334,542,582,119,536 - Step 5: Solve for x
x = 90,334,542,582,119,536/430,897,721.68 - Step 6: Final answer
x = 209,642,655.41
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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.