Home / 780,864.64-1,077,374.72-490,507.58

Finding the Fourth Proportional to 780,864.64, 1,077,374.72 and 490,507.58

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Solution

The fourth proportional to 780,864.64, 1,077,374.72 and 490,507.58 is: 676,763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,864.64 : 1,077,374.72 = 490,507.58 : x
  2. Step 2: Convert to fraction form
    780,864.64/1,077,374.72 = 490,507.58/x
  3. Step 3: Cross multiply
    780,864.64x = 1,077,374.72 × 490,507.58
  4. Step 4: Simplify right side
    780,864.64x = 528,460,464,207.84
  5. Step 5: Solve for x
    x = 528,460,464,207.84/780,864.64
  6. Step 6: Final answer
    x = 676,763.22

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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.