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Finding the Fourth Proportional to 610,345.30, 842,242.78 and 338,397.32

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Solution

The fourth proportional to 610,345.30, 842,242.78 and 338,397.32 is: 466,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,345.30 : 842,242.78 = 338,397.32 : x
  2. Step 2: Convert to fraction form
    610,345.30/842,242.78 = 338,397.32/x
  3. Step 3: Cross multiply
    610,345.30x = 842,242.78 × 338,397.32
  4. Step 4: Simplify right side
    610,345.30x = 285,012,699,541.35
  5. Step 5: Solve for x
    x = 285,012,699,541.35/610,345.30
  6. Step 6: Final answer
    x = 466,969.60

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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.