Home / 664,419.20-916,579.68-434,875.46

Finding the Fourth Proportional to 664,419.20, 916,579.68 and 434,875.46

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Solution

The fourth proportional to 664,419.20, 916,579.68 and 434,875.46 is: 599,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,419.20 : 916,579.68 = 434,875.46 : x
  2. Step 2: Convert to fraction form
    664,419.20/916,579.68 = 434,875.46/x
  3. Step 3: Cross multiply
    664,419.20x = 916,579.68 × 434,875.46
  4. Step 4: Simplify right side
    664,419.20x = 398,598,009,966.65
  5. Step 5: Solve for x
    x = 398,598,009,966.65/664,419.20
  6. Step 6: Final answer
    x = 599,919.46

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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.