Home / 772,365.78-1,065,927.91-428,309.62

Finding the Fourth Proportional to 772,365.78, 1,065,927.91 and 428,309.62

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Solution

The fourth proportional to 772,365.78, 1,065,927.91 and 428,309.62 is: 591,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,365.78 : 1,065,927.91 = 428,309.62 : x
  2. Step 2: Convert to fraction form
    772,365.78/1,065,927.91 = 428,309.62/x
  3. Step 3: Cross multiply
    772,365.78x = 1,065,927.91 × 428,309.62
  4. Step 4: Simplify right side
    772,365.78x = 456,547,178,079.49
  5. Step 5: Solve for x
    x = 456,547,178,079.49/772,365.78
  6. Step 6: Final answer
    x = 591,102.29

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1.5x scale

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.