Home / 1,312,691.16-1,969,036.74-315,419.16

Finding the Fourth Proportional to 1,312,691.16, 1,969,036.74 and 315,419.16

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Solution

The fourth proportional to 1,312,691.16, 1,969,036.74 and 315,419.16 is: 473,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,691.16 : 1,969,036.74 = 315,419.16 : x
  2. Step 2: Convert to fraction form
    1,312,691.16/1,969,036.74 = 315,419.16/x
  3. Step 3: Cross multiply
    1,312,691.16x = 1,969,036.74 × 315,419.16
  4. Step 4: Simplify right side
    1,312,691.16x = 621,071,914,539.94
  5. Step 5: Solve for x
    x = 621,071,914,539.94/1,312,691.16
  6. Step 6: Final answer
    x = 473,128.74

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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.