Home / 772,254.32-1,065,657.21-428,086.94

Finding the Fourth Proportional to 772,254.32, 1,065,657.21 and 428,086.94

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Solution

The fourth proportional to 772,254.32, 1,065,657.21 and 428,086.94 is: 590,730.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,254.32 : 1,065,657.21 = 428,086.94 : x
  2. Step 2: Convert to fraction form
    772,254.32/1,065,657.21 = 428,086.94/x
  3. Step 3: Cross multiply
    772,254.32x = 1,065,657.21 × 428,086.94
  4. Step 4: Simplify right side
    772,254.32x = 456,193,934,117.84
  5. Step 5: Solve for x
    x = 456,193,934,117.84/772,254.32
  6. Step 6: Final answer
    x = 590,730.18

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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.