Home / 1,248,429.16-1,871,856.42-687,857.32

Finding the Fourth Proportional to 1,248,429.16, 1,871,856.42 and 687,857.32

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Solution

The fourth proportional to 1,248,429.16, 1,871,856.42 and 687,857.32 is: 1,031,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,429.16 : 1,871,856.42 = 687,857.32 : x
  2. Step 2: Convert to fraction form
    1,248,429.16/1,871,856.42 = 687,857.32/x
  3. Step 3: Cross multiply
    1,248,429.16x = 1,871,856.42 × 687,857.32
  4. Step 4: Simplify right side
    1,248,429.16x = 1,287,570,140,485.99
  5. Step 5: Solve for x
    x = 1,287,570,140,485.99/1,248,429.16
  6. Step 6: Final answer
    x = 1,031,352.18

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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.