Home / 909,743.20-1,255,418.40-507,335.20

Finding the Fourth Proportional to 909,743.20, 1,255,418.40 and 507,335.20

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Solution

The fourth proportional to 909,743.20, 1,255,418.40 and 507,335.20 is: 700,107.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,743.20 : 1,255,418.40 = 507,335.20 : x
  2. Step 2: Convert to fraction form
    909,743.20/1,255,418.40 = 507,335.20/x
  3. Step 3: Cross multiply
    909,743.20x = 1,255,418.40 × 507,335.20
  4. Step 4: Simplify right side
    909,743.20x = 636,917,945,047.68
  5. Step 5: Solve for x
    x = 636,917,945,047.68/909,743.20
  6. Step 6: Final answer
    x = 700,107.40

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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.