Home / 1,387,840.32-2,078,434.08-712,144.32

Finding the Fourth Proportional to 1,387,840.32, 2,078,434.08 and 712,144.32

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Solution

The fourth proportional to 1,387,840.32, 2,078,434.08 and 712,144.32 is: 1,066,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,840.32 : 2,078,434.08 = 712,144.32 : x
  2. Step 2: Convert to fraction form
    1,387,840.32/2,078,434.08 = 712,144.32/x
  3. Step 3: Cross multiply
    1,387,840.32x = 2,078,434.08 × 712,144.32
  4. Step 4: Simplify right side
    1,387,840.32x = 1,480,145,024,566.43
  5. Step 5: Solve for x
    x = 1,480,145,024,566.43/1,387,840.32
  6. Step 6: Final answer
    x = 1,066,509.60

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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.