Home / 806,492.60-1,209,738.90-357,428.60

Finding the Fourth Proportional to 806,492.60, 1,209,738.90 and 357,428.60

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Solution

The fourth proportional to 806,492.60, 1,209,738.90 and 357,428.60 is: 536,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,492.60 : 1,209,738.90 = 357,428.60 : x
  2. Step 2: Convert to fraction form
    806,492.60/1,209,738.90 = 357,428.60/x
  3. Step 3: Cross multiply
    806,492.60x = 1,209,738.90 × 357,428.60
  4. Step 4: Simplify right side
    806,492.60x = 432,395,281,392.54
  5. Step 5: Solve for x
    x = 432,395,281,392.54/806,492.60
  6. Step 6: Final answer
    x = 536,142.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.