Home / 879,384.64-1,213,578.30-497,403.76

Finding the Fourth Proportional to 879,384.64, 1,213,578.30 and 497,403.76

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Solution

The fourth proportional to 879,384.64, 1,213,578.30 and 497,403.76 is: 686,432.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,384.64 : 1,213,578.30 = 497,403.76 : x
  2. Step 2: Convert to fraction form
    879,384.64/1,213,578.30 = 497,403.76/x
  3. Step 3: Cross multiply
    879,384.64x = 1,213,578.30 × 497,403.76
  4. Step 4: Simplify right side
    879,384.64x = 603,638,409,474.41
  5. Step 5: Solve for x
    x = 603,638,409,474.41/879,384.64
  6. Step 6: Final answer
    x = 686,432.74

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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.