Home / 1,312,686.66-1,969,030-315,414.66

Finding the Fourth Proportional to 1,312,686.66, 1,969,030 and 315,414.66

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Solution

The fourth proportional to 1,312,686.66, 1,969,030 and 315,414.66 is: 473,121.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,686.66 : 1,969,030 = 315,414.66 : x
  2. Step 2: Convert to fraction form
    1,312,686.66/1,969,030 = 315,414.66/x
  3. Step 3: Cross multiply
    1,312,686.66x = 1,969,030 × 315,414.66
  4. Step 4: Simplify right side
    1,312,686.66x = 621,060,927,979.80
  5. Step 5: Solve for x
    x = 621,060,927,979.80/1,312,686.66
  6. Step 6: Final answer
    x = 473,121.99

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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.