Home / 1,209,987.70-1,814,981.55-368,430.10

Finding the Fourth Proportional to 1,209,987.70, 1,814,981.55 and 368,430.10

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Solution

The fourth proportional to 1,209,987.70, 1,814,981.55 and 368,430.10 is: 552,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,987.70 : 1,814,981.55 = 368,430.10 : x
  2. Step 2: Convert to fraction form
    1,209,987.70/1,814,981.55 = 368,430.10/x
  3. Step 3: Cross multiply
    1,209,987.70x = 1,814,981.55 × 368,430.10
  4. Step 4: Simplify right side
    1,209,987.70x = 668,693,833,964.66
  5. Step 5: Solve for x
    x = 668,693,833,964.66/1,209,987.70
  6. Step 6: Final answer
    x = 552,645.15

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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.