Home / 772,368.17-1,065,901.79-428,182.21

Finding the Fourth Proportional to 772,368.17, 1,065,901.79 and 428,182.21

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Solution

The fourth proportional to 772,368.17, 1,065,901.79 and 428,182.21 is: 590,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,368.17 : 1,065,901.79 = 428,182.21 : x
  2. Step 2: Convert to fraction form
    772,368.17/1,065,901.79 = 428,182.21/x
  3. Step 3: Cross multiply
    772,368.17x = 1,065,901.79 × 428,182.21
  4. Step 4: Simplify right side
    772,368.17x = 456,400,184,085.16
  5. Step 5: Solve for x
    x = 456,400,184,085.16/772,368.17
  6. Step 6: Final answer
    x = 590,910.14

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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.