Home / 621,828.60-933,434.10-385,438.20

Finding the Fourth Proportional to 621,828.60, 933,434.10 and 385,438.20

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Solution

The fourth proportional to 621,828.60, 933,434.10 and 385,438.20 is: 578,585.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,828.60 : 933,434.10 = 385,438.20 : x
  2. Step 2: Convert to fraction form
    621,828.60/933,434.10 = 385,438.20/x
  3. Step 3: Cross multiply
    621,828.60x = 933,434.10 × 385,438.20
  4. Step 4: Simplify right side
    621,828.60x = 359,781,159,322.62
  5. Step 5: Solve for x
    x = 359,781,159,322.62/621,828.60
  6. Step 6: Final answer
    x = 578,585.74

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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.