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Finding the Fourth Proportional to 610,585.20, 842,648.40 and 338,739.48

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Solution

The fourth proportional to 610,585.20, 842,648.40 and 338,739.48 is: 467,483.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,585.20 : 842,648.40 = 338,739.48 : x
  2. Step 2: Convert to fraction form
    610,585.20/842,648.40 = 338,739.48/x
  3. Step 3: Cross multiply
    610,585.20x = 842,648.40 × 338,739.48
  4. Step 4: Simplify right side
    610,585.20x = 285,438,280,838.83
  5. Step 5: Solve for x
    x = 285,438,280,838.83/610,585.20
  6. Step 6: Final answer
    x = 467,483.13

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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.