Home / 664,319.10-916,789.55-373,949.40

Finding the Fourth Proportional to 664,319.10, 916,789.55 and 373,949.40

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Solution

The fourth proportional to 664,319.10, 916,789.55 and 373,949.40 is: 516,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,319.10 : 916,789.55 = 373,949.40 : x
  2. Step 2: Convert to fraction form
    664,319.10/916,789.55 = 373,949.40/x
  3. Step 3: Cross multiply
    664,319.10x = 916,789.55 × 373,949.40
  4. Step 4: Simplify right side
    664,319.10x = 342,832,902,148.77
  5. Step 5: Solve for x
    x = 342,832,902,148.77/664,319.10
  6. Step 6: Final answer
    x = 516,066.60

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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.