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Finding the Fourth Proportional to 610,580.40, 842,607.12 and 338,653.68

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Solution

The fourth proportional to 610,580.40, 842,607.12 and 338,653.68 is: 467,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,580.40 : 842,607.12 = 338,653.68 : x
  2. Step 2: Convert to fraction form
    610,580.40/842,607.12 = 338,653.68/x
  3. Step 3: Cross multiply
    610,580.40x = 842,607.12 × 338,653.68
  4. Step 4: Simplify right side
    610,580.40x = 285,352,001,982.20
  5. Step 5: Solve for x
    x = 285,352,001,982.20/610,580.40
  6. Step 6: Final answer
    x = 467,345.50

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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.