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Finding the Fourth Proportional to 709,320.64, 978,862.08 and 454,671.64

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Solution

The fourth proportional to 709,320.64, 978,862.08 and 454,671.64 is: 627,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,320.64 : 978,862.08 = 454,671.64 : x
  2. Step 2: Convert to fraction form
    709,320.64/978,862.08 = 454,671.64/x
  3. Step 3: Cross multiply
    709,320.64x = 978,862.08 × 454,671.64
  4. Step 4: Simplify right side
    709,320.64x = 445,060,827,247.41
  5. Step 5: Solve for x
    x = 445,060,827,247.41/709,320.64
  6. Step 6: Final answer
    x = 627,446.60

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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.