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Finding the Fourth Proportional to 978,482.81, 1,465,814.25 and 674,159.06

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Solution

The fourth proportional to 978,482.81, 1,465,814.25 and 674,159.06 is: 1,009,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,482.81 : 1,465,814.25 = 674,159.06 : x
  2. Step 2: Convert to fraction form
    978,482.81/1,465,814.25 = 674,159.06/x
  3. Step 3: Cross multiply
    978,482.81x = 1,465,814.25 × 674,159.06
  4. Step 4: Simplify right side
    978,482.81x = 988,191,949,585.53
  5. Step 5: Solve for x
    x = 988,191,949,585.53/978,482.81
  6. Step 6: Final answer
    x = 1,009,922.65

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Why These Related Problems?

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