Home / 920,424.60-1,378,304.10-878,434.20

Finding the Fourth Proportional to 920,424.60, 1,378,304.10 and 878,434.20

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Solution

The fourth proportional to 920,424.60, 1,378,304.10 and 878,434.20 is: 1,315,424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,424.60 : 1,378,304.10 = 878,434.20 : x
  2. Step 2: Convert to fraction form
    920,424.60/1,378,304.10 = 878,434.20/x
  3. Step 3: Cross multiply
    920,424.60x = 1,378,304.10 × 878,434.20
  4. Step 4: Simplify right side
    920,424.60x = 1,210,749,459,440.22
  5. Step 5: Solve for x
    x = 1,210,749,459,440.22/920,424.60
  6. Step 6: Final answer
    x = 1,315,424.92

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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.