Finding the Fourth Proportional to 900,299,386.40, 1,242,543,110.09 and 518,748,345.23
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Solution
The fourth proportional to 900,299,386.40, 1,242,543,110.09 and 518,748,345.23 is: 715,947,596.95
Step by Step Solution
- Step 1: Write the proportion equation
900,299,386.40 : 1,242,543,110.09 = 518,748,345.23 : x - Step 2: Convert to fraction form
900,299,386.40/1,242,543,110.09 = 518,748,345.23/x - Step 3: Cross multiply
900,299,386.40x = 1,242,543,110.09 × 518,748,345.23 - Step 4: Simplify right side
900,299,386.40x = 644,567,182,231,209,344 - Step 5: Solve for x
x = 644,567,182,231,209,344/900,299,386.40 - Step 6: Final answer
x = 715,947,596.95
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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.