Home / 712,698.62-983,524.27-390,420.17

Finding the Fourth Proportional to 712,698.62, 983,524.27 and 390,420.17

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Solution

The fourth proportional to 712,698.62, 983,524.27 and 390,420.17 is: 538,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,698.62 : 983,524.27 = 390,420.17 : x
  2. Step 2: Convert to fraction form
    712,698.62/983,524.27 = 390,420.17/x
  3. Step 3: Cross multiply
    712,698.62x = 983,524.27 × 390,420.17
  4. Step 4: Simplify right side
    712,698.62x = 383,987,712,692.53
  5. Step 5: Solve for x
    x = 383,987,712,692.53/712,698.62
  6. Step 6: Final answer
    x = 538,779.93

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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.