Home / 1,312,728.08-1,969,091.90-315,456.08

Finding the Fourth Proportional to 1,312,728.08, 1,969,091.90 and 315,456.08

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Solution

The fourth proportional to 1,312,728.08, 1,969,091.90 and 315,456.08 is: 473,184.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,728.08 : 1,969,091.90 = 315,456.08 : x
  2. Step 2: Convert to fraction form
    1,312,728.08/1,969,091.90 = 315,456.08/x
  3. Step 3: Cross multiply
    1,312,728.08x = 1,969,091.90 × 315,456.08
  4. Step 4: Simplify right side
    1,312,728.08x = 621,162,011,933.75
  5. Step 5: Solve for x
    x = 621,162,011,933.75/1,312,728.08
  6. Step 6: Final answer
    x = 473,184.07

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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.