Finding the Fourth Proportional to 1,023,385,862.84, 1,412,272,480.74 and 553,487,170.28
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Solution
The fourth proportional to 1,023,385,862.84, 1,412,272,480.74 and 553,487,170.28 is: 763,812,289.59
Step by Step Solution
- Step 1: Write the proportion equation
1,023,385,862.84 : 1,412,272,480.74 = 553,487,170.28 : x - Step 2: Convert to fraction form
1,023,385,862.84/1,412,272,480.74 = 553,487,170.28/x - Step 3: Cross multiply
1,023,385,862.84x = 1,412,272,480.74 × 553,487,170.28 - Step 4: Simplify right side
1,023,385,862.84x = 781,674,699,029,098,368 - Step 5: Solve for x
x = 781,674,699,029,098,368/1,023,385,862.84 - Step 6: Final answer
x = 763,812,289.59
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Double scale
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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.