Home / 742,530.88-1,024,693.36-402,999.28

Finding the Fourth Proportional to 742,530.88, 1,024,693.36 and 402,999.28

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Solution

The fourth proportional to 742,530.88, 1,024,693.36 and 402,999.28 is: 556,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,530.88 : 1,024,693.36 = 402,999.28 : x
  2. Step 2: Convert to fraction form
    742,530.88/1,024,693.36 = 402,999.28/x
  3. Step 3: Cross multiply
    742,530.88x = 1,024,693.36 × 402,999.28
  4. Step 4: Simplify right side
    742,530.88x = 412,950,686,300.78
  5. Step 5: Solve for x
    x = 412,950,686,300.78/742,530.88
  6. Step 6: Final answer
    x = 556,139.41

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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.