Home / 1,400,320.89-2,100,483.33-389,442.90

Finding the Fourth Proportional to 1,400,320.89, 2,100,483.33 and 389,442.90

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Solution

The fourth proportional to 1,400,320.89, 2,100,483.33 and 389,442.90 is: 584,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,320.89 : 2,100,483.33 = 389,442.90 : x
  2. Step 2: Convert to fraction form
    1,400,320.89/2,100,483.33 = 389,442.90/x
  3. Step 3: Cross multiply
    1,400,320.89x = 2,100,483.33 × 389,442.90
  4. Step 4: Simplify right side
    1,400,320.89x = 818,018,319,436.86
  5. Step 5: Solve for x
    x = 818,018,319,436.86/1,400,320.89
  6. Step 6: Final answer
    x = 584,164.90

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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.