Home / 386,359.38-578,741.31-286,632.18

Finding the Fourth Proportional to 386,359.38, 578,741.31 and 286,632.18

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Solution

The fourth proportional to 386,359.38, 578,741.31 and 286,632.18 is: 429,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,359.38 : 578,741.31 = 286,632.18 : x
  2. Step 2: Convert to fraction form
    386,359.38/578,741.31 = 286,632.18/x
  3. Step 3: Cross multiply
    386,359.38x = 578,741.31 × 286,632.18
  4. Step 4: Simplify right side
    386,359.38x = 165,885,883,341.36
  5. Step 5: Solve for x
    x = 165,885,883,341.36/386,359.38
  6. Step 6: Final answer
    x = 429,356.43

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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.