Home / 687,574.02-948,834.36-381,634.59

Finding the Fourth Proportional to 687,574.02, 948,834.36 and 381,634.59

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Solution

The fourth proportional to 687,574.02, 948,834.36 and 381,634.59 is: 526,645.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,574.02 : 948,834.36 = 381,634.59 : x
  2. Step 2: Convert to fraction form
    687,574.02/948,834.36 = 381,634.59/x
  3. Step 3: Cross multiply
    687,574.02x = 948,834.36 × 381,634.59
  4. Step 4: Simplify right side
    687,574.02x = 362,108,011,956.51
  5. Step 5: Solve for x
    x = 362,108,011,956.51/687,574.02
  6. Step 6: Final answer
    x = 526,645.86

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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.