Home / 742,616.41-1,024,784.13-420,319.59

Finding the Fourth Proportional to 742,616.41, 1,024,784.13 and 420,319.59

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Solution

The fourth proportional to 742,616.41, 1,024,784.13 and 420,319.59 is: 580,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,616.41 : 1,024,784.13 = 420,319.59 : x
  2. Step 2: Convert to fraction form
    742,616.41/1,024,784.13 = 420,319.59/x
  3. Step 3: Cross multiply
    742,616.41x = 1,024,784.13 × 420,319.59
  4. Step 4: Simplify right side
    742,616.41x = 430,736,839,185.39
  5. Step 5: Solve for x
    x = 430,736,839,185.39/742,616.41
  6. Step 6: Final answer
    x = 580,026.02

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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.