Home / 1,390,256.90-2,085,385.35-492,712.10

Finding the Fourth Proportional to 1,390,256.90, 2,085,385.35 and 492,712.10

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Solution

The fourth proportional to 1,390,256.90, 2,085,385.35 and 492,712.10 is: 739,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,256.90 : 2,085,385.35 = 492,712.10 : x
  2. Step 2: Convert to fraction form
    1,390,256.90/2,085,385.35 = 492,712.10/x
  3. Step 3: Cross multiply
    1,390,256.90x = 2,085,385.35 × 492,712.10
  4. Step 4: Simplify right side
    1,390,256.90x = 1,027,494,595,107.74
  5. Step 5: Solve for x
    x = 1,027,494,595,107.74/1,390,256.90
  6. Step 6: Final answer
    x = 739,068.15

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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.