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Finding the Fourth Proportional to 554,425.73, 765,106.47 and 312,707.56

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Solution

The fourth proportional to 554,425.73, 765,106.47 and 312,707.56 is: 431,535.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,425.73 : 765,106.47 = 312,707.56 : x
  2. Step 2: Convert to fraction form
    554,425.73/765,106.47 = 312,707.56/x
  3. Step 3: Cross multiply
    554,425.73x = 765,106.47 × 312,707.56
  4. Step 4: Simplify right side
    554,425.73x = 239,254,575,461.15
  5. Step 5: Solve for x
    x = 239,254,575,461.15/554,425.73
  6. Step 6: Final answer
    x = 431,535.84

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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.