Home / 775,316.88-1,069,938.18-431,145.45

Finding the Fourth Proportional to 775,316.88, 1,069,938.18 and 431,145.45

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Solution

The fourth proportional to 775,316.88, 1,069,938.18 and 431,145.45 is: 594,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,316.88 : 1,069,938.18 = 431,145.45 : x
  2. Step 2: Convert to fraction form
    775,316.88/1,069,938.18 = 431,145.45/x
  3. Step 3: Cross multiply
    775,316.88x = 1,069,938.18 × 431,145.45
  4. Step 4: Simplify right side
    775,316.88x = 461,298,978,088.28
  5. Step 5: Solve for x
    x = 461,298,978,088.28/775,316.88
  6. Step 6: Final answer
    x = 594,981.21

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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.