Finding the Fourth Proportional to 657,347.13, 907,139.10 and 355,541.13
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Solution
The fourth proportional to 657,347.13, 907,139.10 and 355,541.13 is: 490,646.79
Step by Step Solution
- Step 1: Write the proportion equation
657,347.13 : 907,139.10 = 355,541.13 : x - Step 2: Convert to fraction form
657,347.13/907,139.10 = 355,541.13/x - Step 3: Cross multiply
657,347.13x = 907,139.10 × 355,541.13 - Step 4: Simplify right side
657,347.13x = 322,525,260,681.18 - Step 5: Solve for x
x = 322,525,260,681.18/657,347.13 - Step 6: Final answer
x = 490,646.79
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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.