Home / 621,827.60-931,429.20-555,342.80

Finding the Fourth Proportional to 621,827.60, 931,429.20 and 555,342.80

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Solution

The fourth proportional to 621,827.60, 931,429.20 and 555,342.80 is: 831,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,827.60 : 931,429.20 = 555,342.80 : x
  2. Step 2: Convert to fraction form
    621,827.60/931,429.20 = 555,342.80/x
  3. Step 3: Cross multiply
    621,827.60x = 931,429.20 × 555,342.80
  4. Step 4: Simplify right side
    621,827.60x = 517,262,499,929.76
  5. Step 5: Solve for x
    x = 517,262,499,929.76/621,827.60
  6. Step 6: Final answer
    x = 831,842.30

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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.