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Finding the Fourth Proportional to 613,386.60, 918,111.60 and 479,542.20

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Solution

The fourth proportional to 613,386.60, 918,111.60 and 479,542.20 is: 717,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,386.60 : 918,111.60 = 479,542.20 : x
  2. Step 2: Convert to fraction form
    613,386.60/918,111.60 = 479,542.20/x
  3. Step 3: Cross multiply
    613,386.60x = 918,111.60 × 479,542.20
  4. Step 4: Simplify right side
    613,386.60x = 440,273,256,509.52
  5. Step 5: Solve for x
    x = 440,273,256,509.52/613,386.60
  6. Step 6: Final answer
    x = 717,774.49

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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.