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Finding the Fourth Proportional to 554,534.51, 765,251.75 and 312,895.71

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Solution

The fourth proportional to 554,534.51, 765,251.75 and 312,895.71 is: 431,792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,534.51 : 765,251.75 = 312,895.71 : x
  2. Step 2: Convert to fraction form
    554,534.51/765,251.75 = 312,895.71/x
  3. Step 3: Cross multiply
    554,534.51x = 765,251.75 × 312,895.71
  4. Step 4: Simplify right side
    554,534.51x = 239,443,990,427.23
  5. Step 5: Solve for x
    x = 239,443,990,427.23/554,534.51
  6. Step 6: Final answer
    x = 431,792.77

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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.