Home / 786,422.30-1,180,520.40-520,701.80

Finding the Fourth Proportional to 786,422.30, 1,180,520.40 and 520,701.80

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Solution

The fourth proportional to 786,422.30, 1,180,520.40 and 520,701.80 is: 781,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,422.30 : 1,180,520.40 = 520,701.80 : x
  2. Step 2: Convert to fraction form
    786,422.30/1,180,520.40 = 520,701.80/x
  3. Step 3: Cross multiply
    786,422.30x = 1,180,520.40 × 520,701.80
  4. Step 4: Simplify right side
    786,422.30x = 614,699,097,216.72
  5. Step 5: Solve for x
    x = 614,699,097,216.72/786,422.30
  6. Step 6: Final answer
    x = 781,639.96

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Double scale
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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.