Home / 772,389.14-1,065,960.17-428,332.98

Finding the Fourth Proportional to 772,389.14, 1,065,960.17 and 428,332.98

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Solution

The fourth proportional to 772,389.14, 1,065,960.17 and 428,332.98 is: 591,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,389.14 : 1,065,960.17 = 428,332.98 : x
  2. Step 2: Convert to fraction form
    772,389.14/1,065,960.17 = 428,332.98/x
  3. Step 3: Cross multiply
    772,389.14x = 1,065,960.17 × 428,332.98
  4. Step 4: Simplify right side
    772,389.14x = 456,585,899,639.34
  5. Step 5: Solve for x
    x = 456,585,899,639.34/772,389.14
  6. Step 6: Final answer
    x = 591,134.54

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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.