Home / 1,287,856.08-1,931,784-446,407.68

Finding the Fourth Proportional to 1,287,856.08, 1,931,784 and 446,407.68

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Solution

The fourth proportional to 1,287,856.08, 1,931,784 and 446,407.68 is: 669,611.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,856.08 : 1,931,784 = 446,407.68 : x
  2. Step 2: Convert to fraction form
    1,287,856.08/1,931,784 = 446,407.68/x
  3. Step 3: Cross multiply
    1,287,856.08x = 1,931,784 × 446,407.68
  4. Step 4: Simplify right side
    1,287,856.08x = 862,363,213,701.12
  5. Step 5: Solve for x
    x = 862,363,213,701.12/1,287,856.08
  6. Step 6: Final answer
    x = 669,611.48

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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.