Home / 785,392.60-1,178,963.70-431,098.60

Finding the Fourth Proportional to 785,392.60, 1,178,963.70 and 431,098.60

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Solution

The fourth proportional to 785,392.60, 1,178,963.70 and 431,098.60 is: 647,128.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,392.60 : 1,178,963.70 = 431,098.60 : x
  2. Step 2: Convert to fraction form
    785,392.60/1,178,963.70 = 431,098.60/x
  3. Step 3: Cross multiply
    785,392.60x = 1,178,963.70 × 431,098.60
  4. Step 4: Simplify right side
    785,392.60x = 508,249,600,520.82
  5. Step 5: Solve for x
    x = 508,249,600,520.82/785,392.60
  6. Step 6: Final answer
    x = 647,128.07

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1.5x scale

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.