Finding the Fourth Proportional to 688,681.23, 950,106.81 and 398,239.12
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Solution
The fourth proportional to 688,681.23, 950,106.81 and 398,239.12 is: 549,411.95
Step by Step Solution
- Step 1: Write the proportion equation
688,681.23 : 950,106.81 = 398,239.12 : x - Step 2: Convert to fraction form
688,681.23/950,106.81 = 398,239.12/x - Step 3: Cross multiply
688,681.23x = 950,106.81 × 398,239.12 - Step 4: Simplify right side
688,681.23x = 378,369,699,920.41 - Step 5: Solve for x
x = 378,369,699,920.41/688,681.23 - Step 6: Final answer
x = 549,411.95
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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.