Home / 817,428.74-1,128,460.28-633,257.51

Finding the Fourth Proportional to 817,428.74, 1,128,460.28 and 633,257.51

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Solution

The fourth proportional to 817,428.74, 1,128,460.28 and 633,257.51 is: 874,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,428.74 : 1,128,460.28 = 633,257.51 : x
  2. Step 2: Convert to fraction form
    817,428.74/1,128,460.28 = 633,257.51/x
  3. Step 3: Cross multiply
    817,428.74x = 1,128,460.28 × 633,257.51
  4. Step 4: Simplify right side
    817,428.74x = 714,605,938,238.11
  5. Step 5: Solve for x
    x = 714,605,938,238.11/817,428.74
  6. Step 6: Final answer
    x = 874,211.91

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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.