Home / 645,634.10-968,159.55-290,465.30

Finding the Fourth Proportional to 645,634.10, 968,159.55 and 290,465.30

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Solution

The fourth proportional to 645,634.10, 968,159.55 and 290,465.30 is: 435,566.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,634.10 : 968,159.55 = 290,465.30 : x
  2. Step 2: Convert to fraction form
    645,634.10/968,159.55 = 290,465.30/x
  3. Step 3: Cross multiply
    645,634.10x = 968,159.55 × 290,465.30
  4. Step 4: Simplify right side
    645,634.10x = 281,216,754,138.62
  5. Step 5: Solve for x
    x = 281,216,754,138.62/645,634.10
  6. Step 6: Final answer
    x = 435,566.76

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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.