Home / 678,028.61-935,598.65-402,342.68

Finding the Fourth Proportional to 678,028.61, 935,598.65 and 402,342.68

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Solution

The fourth proportional to 678,028.61, 935,598.65 and 402,342.68 is: 555,184.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,028.61 : 935,598.65 = 402,342.68 : x
  2. Step 2: Convert to fraction form
    678,028.61/935,598.65 = 402,342.68/x
  3. Step 3: Cross multiply
    678,028.61x = 935,598.65 × 402,342.68
  4. Step 4: Simplify right side
    678,028.61x = 376,431,261,555.68
  5. Step 5: Solve for x
    x = 376,431,261,555.68/678,028.61
  6. Step 6: Final answer
    x = 555,184.93

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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.