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Finding the Fourth Proportional to 978,080, 1,349,754.06 and 570,463.28

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Solution

The fourth proportional to 978,080, 1,349,754.06 and 570,463.28 is: 787,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,080 : 1,349,754.06 = 570,463.28 : x
  2. Step 2: Convert to fraction form
    978,080/1,349,754.06 = 570,463.28/x
  3. Step 3: Cross multiply
    978,080x = 1,349,754.06 × 570,463.28
  4. Step 4: Simplify right side
    978,080x = 769,985,128,260.92
  5. Step 5: Solve for x
    x = 769,985,128,260.92/978,080
  6. Step 6: Final answer
    x = 787,241.46

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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.