Finding the Fourth Proportional to 709,421.70, 1,064,132.55 and 210,785.70
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Solution
The fourth proportional to 709,421.70, 1,064,132.55 and 210,785.70 is: 316,178.55
Step by Step Solution
- Step 1: Write the proportion equation
709,421.70 : 1,064,132.55 = 210,785.70 : x - Step 2: Convert to fraction form
709,421.70/1,064,132.55 = 210,785.70/x - Step 3: Cross multiply
709,421.70x = 1,064,132.55 × 210,785.70 - Step 4: Simplify right side
709,421.70x = 224,303,924,444.54 - Step 5: Solve for x
x = 224,303,924,444.54/709,421.70 - Step 6: Final answer
x = 316,178.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.