Finding the Fourth Proportional to 909,936,487.19, 1,255,709,615.53 and 492,248,656.91
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Solution
The fourth proportional to 909,936,487.19, 1,255,709,615.53 and 492,248,656.91 is: 679,301,666.01
Step by Step Solution
- Step 1: Write the proportion equation
909,936,487.19 : 1,255,709,615.53 = 492,248,656.91 : x - Step 2: Convert to fraction form
909,936,487.19/1,255,709,615.53 = 492,248,656.91/x - Step 3: Cross multiply
909,936,487.19x = 1,255,709,615.53 × 492,248,656.91 - Step 4: Simplify right side
909,936,487.19x = 618,121,371,707,336,320 - Step 5: Solve for x
x = 618,121,371,707,336,320/909,936,487.19 - Step 6: Final answer
x = 679,301,666.01
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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.