Home / 642,165,185.60-886,261,471.92-359,983,840.76

Finding the Fourth Proportional to 642,165,185.60, 886,261,471.92 and 359,983,840.76

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Solution

The fourth proportional to 642,165,185.60, 886,261,471.92 and 359,983,840.76 is: 496,818,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,165,185.60 : 886,261,471.92 = 359,983,840.76 : x
  2. Step 2: Convert to fraction form
    642,165,185.60/886,261,471.92 = 359,983,840.76/x
  3. Step 3: Cross multiply
    642,165,185.60x = 886,261,471.92 × 359,983,840.76
  4. Step 4: Simplify right side
    642,165,185.60x = 319,039,808,579,372,480
  5. Step 5: Solve for x
    x = 319,039,808,579,372,480/642,165,185.60
  6. Step 6: Final answer
    x = 496,818,911.60

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Double scale
Find fourth proportional to 642,165,186.60, 886,261,473.30 and 359,983,841.76
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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.