Home / 1,292,126.32-1,938,036.84-345,570.40

Finding the Fourth Proportional to 1,292,126.32, 1,938,036.84 and 345,570.40

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Solution

The fourth proportional to 1,292,126.32, 1,938,036.84 and 345,570.40 is: 518,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,126.32 : 1,938,036.84 = 345,570.40 : x
  2. Step 2: Convert to fraction form
    1,292,126.32/1,938,036.84 = 345,570.40/x
  3. Step 3: Cross multiply
    1,292,126.32x = 1,938,036.84 × 345,570.40
  4. Step 4: Simplify right side
    1,292,126.32x = 669,728,166,013.54
  5. Step 5: Solve for x
    x = 669,728,166,013.54/1,292,126.32
  6. Step 6: Final answer
    x = 518,314.78

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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.