Finding the Fourth Proportional to 570,430.90, 787,203.98 and 312,303.55
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Solution
The fourth proportional to 570,430.90, 787,203.98 and 312,303.55 is: 430,984.01
Step by Step Solution
- Step 1: Write the proportion equation
570,430.90 : 787,203.98 = 312,303.55 : x - Step 2: Convert to fraction form
570,430.90/787,203.98 = 312,303.55/x - Step 3: Cross multiply
570,430.90x = 787,203.98 × 312,303.55 - Step 4: Simplify right side
570,430.90x = 245,846,597,528.13 - Step 5: Solve for x
x = 245,846,597,528.13/570,430.90 - Step 6: Final answer
x = 430,984.01
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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.