Home / 428,358.75-642,533.51-175,582.90

Finding the Fourth Proportional to 428,358.75, 642,533.51 and 175,582.90

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Solution

The fourth proportional to 428,358.75, 642,533.51 and 175,582.90 is: 263,372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,358.75 : 642,533.51 = 175,582.90 : x
  2. Step 2: Convert to fraction form
    428,358.75/642,533.51 = 175,582.90/x
  3. Step 3: Cross multiply
    428,358.75x = 642,533.51 × 175,582.90
  4. Step 4: Simplify right side
    428,358.75x = 112,817,895,207.17
  5. Step 5: Solve for x
    x = 112,817,895,207.17/428,358.75
  6. Step 6: Final answer
    x = 263,372.45

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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.