Home / 405,913.40-608,870.10-384,140.60

Finding the Fourth Proportional to 405,913.40, 608,870.10 and 384,140.60

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Solution

The fourth proportional to 405,913.40, 608,870.10 and 384,140.60 is: 576,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,913.40 : 608,870.10 = 384,140.60 : x
  2. Step 2: Convert to fraction form
    405,913.40/608,870.10 = 384,140.60/x
  3. Step 3: Cross multiply
    405,913.40x = 608,870.10 × 384,140.60
  4. Step 4: Simplify right side
    405,913.40x = 233,891,725,536.06
  5. Step 5: Solve for x
    x = 233,891,725,536.06/405,913.40
  6. Step 6: Final answer
    x = 576,210.90

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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.