Home / 418,025.28-577,040.32-290,774.72

Finding the Fourth Proportional to 418,025.28, 577,040.32 and 290,774.72

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Solution

The fourth proportional to 418,025.28, 577,040.32 and 290,774.72 is: 401,384.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,025.28 : 577,040.32 = 290,774.72 : x
  2. Step 2: Convert to fraction form
    418,025.28/577,040.32 = 290,774.72/x
  3. Step 3: Cross multiply
    418,025.28x = 577,040.32 × 290,774.72
  4. Step 4: Simplify right side
    418,025.28x = 167,788,737,476.71
  5. Step 5: Solve for x
    x = 167,788,737,476.71/418,025.28
  6. Step 6: Final answer
    x = 401,384.19

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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.