Home / 1,208,428-1,812,255.01-398,631.18

Finding the Fourth Proportional to 1,208,428, 1,812,255.01 and 398,631.18

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Solution

The fourth proportional to 1,208,428, 1,812,255.01 and 398,631.18 is: 597,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,428 : 1,812,255.01 = 398,631.18 : x
  2. Step 2: Convert to fraction form
    1,208,428/1,812,255.01 = 398,631.18/x
  3. Step 3: Cross multiply
    1,208,428x = 1,812,255.01 × 398,631.18
  4. Step 4: Simplify right side
    1,208,428x = 722,421,353,097.21
  5. Step 5: Solve for x
    x = 722,421,353,097.21/1,208,428
  6. Step 6: Final answer
    x = 597,819.11

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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.