Home / 813,431.21-1,122,892.65-569,374.47

Finding the Fourth Proportional to 813,431.21, 1,122,892.65 and 569,374.47

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Solution

The fourth proportional to 813,431.21, 1,122,892.65 and 569,374.47 is: 785,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,431.21 : 1,122,892.65 = 569,374.47 : x
  2. Step 2: Convert to fraction form
    813,431.21/1,122,892.65 = 569,374.47/x
  3. Step 3: Cross multiply
    813,431.21x = 1,122,892.65 × 569,374.47
  4. Step 4: Simplify right side
    813,431.21x = 639,346,407,460.65
  5. Step 5: Solve for x
    x = 639,346,407,460.65/813,431.21
  6. Step 6: Final answer
    x = 785,987.07

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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.