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Finding the Fourth Proportional to 665,107.60, 997,661.40 and 578,502.40

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Solution

The fourth proportional to 665,107.60, 997,661.40 and 578,502.40 is: 867,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,107.60 : 997,661.40 = 578,502.40 : x
  2. Step 2: Convert to fraction form
    665,107.60/997,661.40 = 578,502.40/x
  3. Step 3: Cross multiply
    665,107.60x = 997,661.40 × 578,502.40
  4. Step 4: Simplify right side
    665,107.60x = 577,149,514,287.36
  5. Step 5: Solve for x
    x = 577,149,514,287.36/665,107.60
  6. Step 6: Final answer
    x = 867,753.60

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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.