Finding the Fourth Proportional to 657,698,808.48, 907,508,986.68 and 375,312,318.72
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Solution
The fourth proportional to 657,698,808.48, 907,508,986.68 and 375,312,318.72 is: 517,865,165.12
Step by Step Solution
- Step 1: Write the proportion equation
657,698,808.48 : 907,508,986.68 = 375,312,318.72 : x - Step 2: Convert to fraction form
657,698,808.48/907,508,986.68 = 375,312,318.72/x - Step 3: Cross multiply
657,698,808.48x = 907,508,986.68 × 375,312,318.72 - Step 4: Simplify right side
657,698,808.48x = 340,599,302,050,108,416 - Step 5: Solve for x
x = 340,599,302,050,108,416/657,698,808.48 - Step 6: Final answer
x = 517,865,165.12
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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.