Home / 511,723.20-766,587.12-311,547.12

Finding the Fourth Proportional to 511,723.20, 766,587.12 and 311,547.12

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Solution

The fourth proportional to 511,723.20, 766,587.12 and 311,547.12 is: 466,713.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,723.20 : 766,587.12 = 311,547.12 : x
  2. Step 2: Convert to fraction form
    511,723.20/766,587.12 = 311,547.12/x
  3. Step 3: Cross multiply
    511,723.20x = 766,587.12 × 311,547.12
  4. Step 4: Simplify right side
    511,723.20x = 238,828,009,465.09
  5. Step 5: Solve for x
    x = 238,828,009,465.09/511,723.20
  6. Step 6: Final answer
    x = 466,713.27

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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.