Home / 745,051.63-1,028,173.20-422,760.86

Finding the Fourth Proportional to 745,051.63, 1,028,173.20 and 422,760.86

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Solution

The fourth proportional to 745,051.63, 1,028,173.20 and 422,760.86 is: 583,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,051.63 : 1,028,173.20 = 422,760.86 : x
  2. Step 2: Convert to fraction form
    745,051.63/1,028,173.20 = 422,760.86/x
  3. Step 3: Cross multiply
    745,051.63x = 1,028,173.20 × 422,760.86
  4. Step 4: Simplify right side
    745,051.63x = 434,671,386,260.95
  5. Step 5: Solve for x
    x = 434,671,386,260.95/745,051.63
  6. Step 6: Final answer
    x = 583,411.10

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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.