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Finding the Fourth Proportional to 861,798.40, 1,292,762.40 and 230,698.24

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Solution

The fourth proportional to 861,798.40, 1,292,762.40 and 230,698.24 is: 346,064.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,798.40 : 1,292,762.40 = 230,698.24 : x
  2. Step 2: Convert to fraction form
    861,798.40/1,292,762.40 = 230,698.24/x
  3. Step 3: Cross multiply
    861,798.40x = 1,292,762.40 × 230,698.24
  4. Step 4: Simplify right side
    861,798.40x = 298,238,010,418.18
  5. Step 5: Solve for x
    x = 298,238,010,418.18/861,798.40
  6. Step 6: Final answer
    x = 346,064.71

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Double scale
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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.