Home / 620,624.20-931,811.10-384,428.20

Finding the Fourth Proportional to 620,624.20, 931,811.10 and 384,428.20

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Solution

The fourth proportional to 620,624.20, 931,811.10 and 384,428.20 is: 577,184.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,624.20 : 931,811.10 = 384,428.20 : x
  2. Step 2: Convert to fraction form
    620,624.20/931,811.10 = 384,428.20/x
  3. Step 3: Cross multiply
    620,624.20x = 931,811.10 × 384,428.20
  4. Step 4: Simplify right side
    620,624.20x = 358,214,463,913.02
  5. Step 5: Solve for x
    x = 358,214,463,913.02/620,624.20
  6. Step 6: Final answer
    x = 577,184.17

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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.