Home / 740,079.05-1,021,308.80-400,547.30

Finding the Fourth Proportional to 740,079.05, 1,021,308.80 and 400,547.30

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Solution

The fourth proportional to 740,079.05, 1,021,308.80 and 400,547.30 is: 552,755.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,079.05 : 1,021,308.80 = 400,547.30 : x
  2. Step 2: Convert to fraction form
    740,079.05/1,021,308.80 = 400,547.30/x
  3. Step 3: Cross multiply
    740,079.05x = 1,021,308.80 × 400,547.30
  4. Step 4: Simplify right side
    740,079.05x = 409,082,486,067.33
  5. Step 5: Solve for x
    x = 409,082,486,067.33/740,079.05
  6. Step 6: Final answer
    x = 552,755.12

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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.