Home / 742,780.80-1,025,032-403,240.32

Finding the Fourth Proportional to 742,780.80, 1,025,032 and 403,240.32

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Solution

The fourth proportional to 742,780.80, 1,025,032 and 403,240.32 is: 556,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,780.80 : 1,025,032 = 403,240.32 : x
  2. Step 2: Convert to fraction form
    742,780.80/1,025,032 = 403,240.32/x
  3. Step 3: Cross multiply
    742,780.80x = 1,025,032 × 403,240.32
  4. Step 4: Simplify right side
    742,780.80x = 413,334,231,690.24
  5. Step 5: Solve for x
    x = 413,334,231,690.24/742,780.80
  6. Step 6: Final answer
    x = 556,468.65

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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.