Home / 476,428.15-711,215.19-408,225.77

Finding the Fourth Proportional to 476,428.15, 711,215.19 and 408,225.77

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Solution

The fourth proportional to 476,428.15, 711,215.19 and 408,225.77 is: 609,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,428.15 : 711,215.19 = 408,225.77 : x
  2. Step 2: Convert to fraction form
    476,428.15/711,215.19 = 408,225.77/x
  3. Step 3: Cross multiply
    476,428.15x = 711,215.19 × 408,225.77
  4. Step 4: Simplify right side
    476,428.15x = 290,336,366,532.32
  5. Step 5: Solve for x
    x = 290,336,366,532.32/476,428.15
  6. Step 6: Final answer
    x = 609,402.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.