Home / 909,739.20-1,255,412.88-507,331.20

Finding the Fourth Proportional to 909,739.20, 1,255,412.88 and 507,331.20

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Solution

The fourth proportional to 909,739.20, 1,255,412.88 and 507,331.20 is: 700,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,739.20 : 1,255,412.88 = 507,331.20 : x
  2. Step 2: Convert to fraction form
    909,739.20/1,255,412.88 = 507,331.20/x
  3. Step 3: Cross multiply
    909,739.20x = 1,255,412.88 × 507,331.20
  4. Step 4: Simplify right side
    909,739.20x = 636,910,122,905.86
  5. Step 5: Solve for x
    x = 636,910,122,905.86/909,739.20
  6. Step 6: Final answer
    x = 700,101.88

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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.