Home / 742,428-1,024,551.36-402,896.28

Finding the Fourth Proportional to 742,428, 1,024,551.36 and 402,896.28

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Solution

The fourth proportional to 742,428, 1,024,551.36 and 402,896.28 is: 555,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,428 : 1,024,551.36 = 402,896.28 : x
  2. Step 2: Convert to fraction form
    742,428/1,024,551.36 = 402,896.28/x
  3. Step 3: Cross multiply
    742,428x = 1,024,551.36 × 402,896.28
  4. Step 4: Simplify right side
    742,428x = 412,787,931,612.94
  5. Step 5: Solve for x
    x = 412,787,931,612.94/742,428
  6. Step 6: Final answer
    x = 555,997.26

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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.