Finding the Fourth Proportional to 939,343,398.26, 1,296,519,655.30 and 537,689,979.95
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Solution
The fourth proportional to 939,343,398.26, 1,296,519,655.30 and 537,689,979.95 is: 742,141,402.97
Step by Step Solution
- Step 1: Write the proportion equation
939,343,398.26 : 1,296,519,655.30 = 537,689,979.95 : x - Step 2: Convert to fraction form
939,343,398.26/1,296,519,655.30 = 537,689,979.95/x - Step 3: Cross multiply
939,343,398.26x = 1,296,519,655.30 × 537,689,979.95 - Step 4: Simplify right side
939,343,398.26x = 697,125,627,455,211,136 - Step 5: Solve for x
x = 697,125,627,455,211,136/939,343,398.26 - Step 6: Final answer
x = 742,141,402.97
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1.5x scale
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.