Home / 1,390,985.90-2,085,960.45-492,080.30

Finding the Fourth Proportional to 1,390,985.90, 2,085,960.45 and 492,080.30

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Solution

The fourth proportional to 1,390,985.90, 2,085,960.45 and 492,080.30 is: 737,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,985.90 : 2,085,960.45 = 492,080.30 : x
  2. Step 2: Convert to fraction form
    1,390,985.90/2,085,960.45 = 492,080.30/x
  3. Step 3: Cross multiply
    1,390,985.90x = 2,085,960.45 × 492,080.30
  4. Step 4: Simplify right side
    1,390,985.90x = 1,026,460,044,024.14
  5. Step 5: Solve for x
    x = 1,026,460,044,024.14/1,390,985.90
  6. Step 6: Final answer
    x = 737,937.06

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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.