Home / 738,721.78-1,020,276.78-496,584.40

Finding the Fourth Proportional to 738,721.78, 1,020,276.78 and 496,584.40

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Solution

The fourth proportional to 738,721.78, 1,020,276.78 and 496,584.40 is: 685,851.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,721.78 : 1,020,276.78 = 496,584.40 : x
  2. Step 2: Convert to fraction form
    738,721.78/1,020,276.78 = 496,584.40/x
  3. Step 3: Cross multiply
    738,721.78x = 1,020,276.78 × 496,584.40
  4. Step 4: Simplify right side
    738,721.78x = 506,653,532,630.23
  5. Step 5: Solve for x
    x = 506,653,532,630.23/738,721.78
  6. Step 6: Final answer
    x = 685,851.62

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1.5x scale

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.