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Finding the Fourth Proportional to 613,136.40, 846,155.88 and 344,864.40

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Solution

The fourth proportional to 613,136.40, 846,155.88 and 344,864.40 is: 475,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,136.40 : 846,155.88 = 344,864.40 : x
  2. Step 2: Convert to fraction form
    613,136.40/846,155.88 = 344,864.40/x
  3. Step 3: Cross multiply
    613,136.40x = 846,155.88 × 344,864.40
  4. Step 4: Simplify right side
    613,136.40x = 291,809,039,862.67
  5. Step 5: Solve for x
    x = 291,809,039,862.67/613,136.40
  6. Step 6: Final answer
    x = 475,928.42

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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.