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Finding the Fourth Proportional to 613,492.40, 846,400.40 and 355,228.40

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Solution

The fourth proportional to 613,492.40, 846,400.40 and 355,228.40 is: 490,088.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,492.40 : 846,400.40 = 355,228.40 : x
  2. Step 2: Convert to fraction form
    613,492.40/846,400.40 = 355,228.40/x
  3. Step 3: Cross multiply
    613,492.40x = 846,400.40 × 355,228.40
  4. Step 4: Simplify right side
    613,492.40x = 300,665,459,851.36
  5. Step 5: Solve for x
    x = 300,665,459,851.36/613,492.40
  6. Step 6: Final answer
    x = 490,088.32

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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.