Home / 817,748.51-1,128,492.99-455,164.60

Finding the Fourth Proportional to 817,748.51, 1,128,492.99 and 455,164.60

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Solution

The fourth proportional to 817,748.51, 1,128,492.99 and 455,164.60 is: 628,127.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,748.51 : 1,128,492.99 = 455,164.60 : x
  2. Step 2: Convert to fraction form
    817,748.51/1,128,492.99 = 455,164.60/x
  3. Step 3: Cross multiply
    817,748.51x = 1,128,492.99 × 455,164.60
  4. Step 4: Simplify right side
    817,748.51x = 513,650,060,396.15
  5. Step 5: Solve for x
    x = 513,650,060,396.15/817,748.51
  6. Step 6: Final answer
    x = 628,127.17

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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.