Home / 742,110.12-1,024,111.53-402,578.37

Finding the Fourth Proportional to 742,110.12, 1,024,111.53 and 402,578.37

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Solution

The fourth proportional to 742,110.12, 1,024,111.53 and 402,578.37 is: 555,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,110.12 : 1,024,111.53 = 402,578.37 : x
  2. Step 2: Convert to fraction form
    742,110.12/1,024,111.53 = 402,578.37/x
  3. Step 3: Cross multiply
    742,110.12x = 1,024,111.53 × 402,578.37
  4. Step 4: Simplify right side
    742,110.12x = 412,285,150,445.61
  5. Step 5: Solve for x
    x = 412,285,150,445.61/742,110.12
  6. Step 6: Final answer
    x = 555,557.91

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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.