Home / 920,418.56-1,269,767.68-538,276.76

Finding the Fourth Proportional to 920,418.56, 1,269,767.68 and 538,276.76

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Solution

The fourth proportional to 920,418.56, 1,269,767.68 and 538,276.76 is: 742,582.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,418.56 : 1,269,767.68 = 538,276.76 : x
  2. Step 2: Convert to fraction form
    920,418.56/1,269,767.68 = 538,276.76/x
  3. Step 3: Cross multiply
    920,418.56x = 1,269,767.68 × 538,276.76
  4. Step 4: Simplify right side
    920,418.56x = 683,486,432,743.12
  5. Step 5: Solve for x
    x = 683,486,432,743.12/920,418.56
  6. Step 6: Final answer
    x = 742,582.19

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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.