Home / 1,578,312.32-2,178,284.32-890,125.76

Finding the Fourth Proportional to 1,578,312.32, 2,178,284.32 and 890,125.76

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Solution

The fourth proportional to 1,578,312.32, 2,178,284.32 and 890,125.76 is: 1,228,493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,312.32 : 2,178,284.32 = 890,125.76 : x
  2. Step 2: Convert to fraction form
    1,578,312.32/2,178,284.32 = 890,125.76/x
  3. Step 3: Cross multiply
    1,578,312.32x = 2,178,284.32 × 890,125.76
  4. Step 4: Simplify right side
    1,578,312.32x = 1,938,946,985,836.08
  5. Step 5: Solve for x
    x = 1,938,946,985,836.08/1,578,312.32
  6. Step 6: Final answer
    x = 1,228,493.85

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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.