Finding the Fourth Proportional to 817,753,640.70, 1,226,630,461.05 and 495,267,368.70
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Solution
The fourth proportional to 817,753,640.70, 1,226,630,461.05 and 495,267,368.70 is: 742,901,053.05
Step by Step Solution
- Step 1: Write the proportion equation
817,753,640.70 : 1,226,630,461.05 = 495,267,368.70 : x - Step 2: Convert to fraction form
817,753,640.70/1,226,630,461.05 = 495,267,368.70/x - Step 3: Cross multiply
817,753,640.70x = 1,226,630,461.05 × 495,267,368.70 - Step 4: Simplify right side
817,753,640.70x = 607,510,040,811,501,312 - Step 5: Solve for x
x = 607,510,040,811,501,312/817,753,640.70 - Step 6: Final answer
x = 742,901,053.05
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Double scale
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Similar ratio
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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.