Home / 712,697.39-983,522.66-390,419.10

Finding the Fourth Proportional to 712,697.39, 983,522.66 and 390,419.10

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Solution

The fourth proportional to 712,697.39, 983,522.66 and 390,419.10 is: 538,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,697.39 : 983,522.66 = 390,419.10 : x
  2. Step 2: Convert to fraction form
    712,697.39/983,522.66 = 390,419.10/x
  3. Step 3: Cross multiply
    712,697.39x = 983,522.66 × 390,419.10
  4. Step 4: Simplify right side
    712,697.39x = 383,986,029,794.71
  5. Step 5: Solve for x
    x = 383,986,029,794.71/712,697.39
  6. Step 6: Final answer
    x = 538,778.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.