Home / 745,432.55-1,028,668.83-455,528.87

Finding the Fourth Proportional to 745,432.55, 1,028,668.83 and 455,528.87

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Solution

The fourth proportional to 745,432.55, 1,028,668.83 and 455,528.87 is: 628,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,432.55 : 1,028,668.83 = 455,528.87 : x
  2. Step 2: Convert to fraction form
    745,432.55/1,028,668.83 = 455,528.87/x
  3. Step 3: Cross multiply
    745,432.55x = 1,028,668.83 × 455,528.87
  4. Step 4: Simplify right side
    745,432.55x = 468,588,349,734.12
  5. Step 5: Solve for x
    x = 468,588,349,734.12/745,432.55
  6. Step 6: Final answer
    x = 628,612.68

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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.