Home / 753,138.65-1,038,947.02-480,920.33

Finding the Fourth Proportional to 753,138.65, 1,038,947.02 and 480,920.33

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Solution

The fourth proportional to 753,138.65, 1,038,947.02 and 480,920.33 is: 663,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,138.65 : 1,038,947.02 = 480,920.33 : x
  2. Step 2: Convert to fraction form
    753,138.65/1,038,947.02 = 480,920.33/x
  3. Step 3: Cross multiply
    753,138.65x = 1,038,947.02 × 480,920.33
  4. Step 4: Simplify right side
    753,138.65x = 499,650,739,261.91
  5. Step 5: Solve for x
    x = 499,650,739,261.91/753,138.65
  6. Step 6: Final answer
    x = 663,424.64

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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.