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Finding the Fourth Proportional to 1,360,867.68, 1,878,330.72 and 1,054,337.76

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Solution

The fourth proportional to 1,360,867.68, 1,878,330.72 and 1,054,337.76 is: 1,455,244.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360,867.68 : 1,878,330.72 = 1,054,337.76 : x
  2. Step 2: Convert to fraction form
    1,360,867.68/1,878,330.72 = 1,054,337.76/x
  3. Step 3: Cross multiply
    1,360,867.68x = 1,878,330.72 × 1,054,337.76
  4. Step 4: Simplify right side
    1,360,867.68x = 1,980,395,003,863.99
  5. Step 5: Solve for x
    x = 1,980,395,003,863.99/1,360,867.68
  6. Step 6: Final answer
    x = 1,455,244.35

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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.