Home / 772,738.16-1,065,451.95-500,706.78

Finding the Fourth Proportional to 772,738.16, 1,065,451.95 and 500,706.78

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Solution

The fourth proportional to 772,738.16, 1,065,451.95 and 500,706.78 is: 690,374.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,738.16 : 1,065,451.95 = 500,706.78 : x
  2. Step 2: Convert to fraction form
    772,738.16/1,065,451.95 = 500,706.78/x
  3. Step 3: Cross multiply
    772,738.16x = 1,065,451.95 × 500,706.78
  4. Step 4: Simplify right side
    772,738.16x = 533,479,015,129.22
  5. Step 5: Solve for x
    x = 533,479,015,129.22/772,738.16
  6. Step 6: Final answer
    x = 690,374.89

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Double scale
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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.