Home / 917,257.15-1,265,826.35-509,384.38

Finding the Fourth Proportional to 917,257.15, 1,265,826.35 and 509,384.38

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Solution

The fourth proportional to 917,257.15, 1,265,826.35 and 509,384.38 is: 702,956.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,257.15 : 1,265,826.35 = 509,384.38 : x
  2. Step 2: Convert to fraction form
    917,257.15/1,265,826.35 = 509,384.38/x
  3. Step 3: Cross multiply
    917,257.15x = 1,265,826.35 × 509,384.38
  4. Step 4: Simplify right side
    917,257.15x = 644,792,170,482.41
  5. Step 5: Solve for x
    x = 644,792,170,482.41/917,257.15
  6. Step 6: Final answer
    x = 702,956.82

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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.