Home / 642,165,242-886,261,549.02-359,983,896.48

Finding the Fourth Proportional to 642,165,242, 886,261,549.02 and 359,983,896.48

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Solution

The fourth proportional to 642,165,242, 886,261,549.02 and 359,983,896.48 is: 496,818,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,165,242 : 886,261,549.02 = 359,983,896.48 : x
  2. Step 2: Convert to fraction form
    642,165,242/886,261,549.02 = 359,983,896.48/x
  3. Step 3: Cross multiply
    642,165,242x = 886,261,549.02 × 359,983,896.48
  4. Step 4: Simplify right side
    642,165,242x = 319,039,885,716,620,160
  5. Step 5: Solve for x
    x = 319,039,885,716,620,160/642,165,242
  6. Step 6: Final answer
    x = 496,818,988.09

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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.