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Finding the Fourth Proportional to 978,510.32, 1,465,855.38 and 674,186.48

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Solution

The fourth proportional to 978,510.32, 1,465,855.38 and 674,186.48 is: 1,009,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,510.32 : 1,465,855.38 = 674,186.48 : x
  2. Step 2: Convert to fraction form
    978,510.32/1,465,855.38 = 674,186.48/x
  3. Step 3: Cross multiply
    978,510.32x = 1,465,855.38 × 674,186.48
  4. Step 4: Simplify right side
    978,510.32x = 988,259,878,831.26
  5. Step 5: Solve for x
    x = 988,259,878,831.26/978,510.32
  6. Step 6: Final answer
    x = 1,009,963.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.