Home / 817,980.80-1,128,521.34-473,628.78

Finding the Fourth Proportional to 817,980.80, 1,128,521.34 and 473,628.78

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Solution

The fourth proportional to 817,980.80, 1,128,521.34 and 473,628.78 is: 653,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,980.80 : 1,128,521.34 = 473,628.78 : x
  2. Step 2: Convert to fraction form
    817,980.80/1,128,521.34 = 473,628.78/x
  3. Step 3: Cross multiply
    817,980.80x = 1,128,521.34 × 473,628.78
  4. Step 4: Simplify right side
    817,980.80x = 534,500,185,468.17
  5. Step 5: Solve for x
    x = 534,500,185,468.17/817,980.80
  6. Step 6: Final answer
    x = 653,438.55

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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.