Home / 1,428,312.90-2,142,481.47-363,355.86

Finding the Fourth Proportional to 1,428,312.90, 2,142,481.47 and 363,355.86

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Solution

The fourth proportional to 1,428,312.90, 2,142,481.47 and 363,355.86 is: 545,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,312.90 : 2,142,481.47 = 363,355.86 : x
  2. Step 2: Convert to fraction form
    1,428,312.90/2,142,481.47 = 363,355.86/x
  3. Step 3: Cross multiply
    1,428,312.90x = 2,142,481.47 × 363,355.86
  4. Step 4: Simplify right side
    1,428,312.90x = 778,483,197,065.91
  5. Step 5: Solve for x
    x = 778,483,197,065.91/1,428,312.90
  6. Step 6: Final answer
    x = 545,036.87

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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.