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Finding the Fourth Proportional to 564,987.44, 779,685 and 310,343.60

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Solution

The fourth proportional to 564,987.44, 779,685 and 310,343.60 is: 428,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,987.44 : 779,685 = 310,343.60 : x
  2. Step 2: Convert to fraction form
    564,987.44/779,685 = 310,343.60/x
  3. Step 3: Cross multiply
    564,987.44x = 779,685 × 310,343.60
  4. Step 4: Simplify right side
    564,987.44x = 241,970,249,766.00
  5. Step 5: Solve for x
    x = 241,970,249,766.00/564,987.44
  6. Step 6: Final answer
    x = 428,275.45

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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.