Home / 645,263.22-890,184.69-403,124.34

Finding the Fourth Proportional to 645,263.22, 890,184.69 and 403,124.34

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Solution

The fourth proportional to 645,263.22, 890,184.69 and 403,124.34 is: 556,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,263.22 : 890,184.69 = 403,124.34 : x
  2. Step 2: Convert to fraction form
    645,263.22/890,184.69 = 403,124.34/x
  3. Step 3: Cross multiply
    645,263.22x = 890,184.69 × 403,124.34
  4. Step 4: Simplify right side
    645,263.22x = 358,855,115,634.36
  5. Step 5: Solve for x
    x = 358,855,115,634.36/645,263.22
  6. Step 6: Final answer
    x = 556,137.56

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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.