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Finding the Fourth Proportional to 587,490.40, 881,235.60 and 521,005.60

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Solution

The fourth proportional to 587,490.40, 881,235.60 and 521,005.60 is: 781,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,490.40 : 881,235.60 = 521,005.60 : x
  2. Step 2: Convert to fraction form
    587,490.40/881,235.60 = 521,005.60/x
  3. Step 3: Cross multiply
    587,490.40x = 881,235.60 × 521,005.60
  4. Step 4: Simplify right side
    587,490.40x = 459,128,682,519.36
  5. Step 5: Solve for x
    x = 459,128,682,519.36/587,490.40
  6. Step 6: Final answer
    x = 781,508.40

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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.