Home / 840,728.96-1,160,231.60-478,205.06

Finding the Fourth Proportional to 840,728.96, 1,160,231.60 and 478,205.06

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Solution

The fourth proportional to 840,728.96, 1,160,231.60 and 478,205.06 is: 659,937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,728.96 : 1,160,231.60 = 478,205.06 : x
  2. Step 2: Convert to fraction form
    840,728.96/1,160,231.60 = 478,205.06/x
  3. Step 3: Cross multiply
    840,728.96x = 1,160,231.60 × 478,205.06
  4. Step 4: Simplify right side
    840,728.96x = 554,828,613,699.71
  5. Step 5: Solve for x
    x = 554,828,613,699.71/840,728.96
  6. Step 6: Final answer
    x = 659,937.56

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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.