Home / 1,047,137.04-1,445,011.20-639,920.16

Finding the Fourth Proportional to 1,047,137.04, 1,445,011.20 and 639,920.16

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Solution

The fourth proportional to 1,047,137.04, 1,445,011.20 and 639,920.16 is: 883,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,137.04 : 1,445,011.20 = 639,920.16 : x
  2. Step 2: Convert to fraction form
    1,047,137.04/1,445,011.20 = 639,920.16/x
  3. Step 3: Cross multiply
    1,047,137.04x = 1,445,011.20 × 639,920.16
  4. Step 4: Simplify right side
    1,047,137.04x = 924,691,798,305.79
  5. Step 5: Solve for x
    x = 924,691,798,305.79/1,047,137.04
  6. Step 6: Final answer
    x = 883,066.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.