Home / 779,633.92-1,075,864.32-489,401.68

Finding the Fourth Proportional to 779,633.92, 1,075,864.32 and 489,401.68

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Solution

The fourth proportional to 779,633.92, 1,075,864.32 and 489,401.68 is: 675,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,633.92 : 1,075,864.32 = 489,401.68 : x
  2. Step 2: Convert to fraction form
    779,633.92/1,075,864.32 = 489,401.68/x
  3. Step 3: Cross multiply
    779,633.92x = 1,075,864.32 × 489,401.68
  4. Step 4: Simplify right side
    779,633.92x = 526,529,805,660.06
  5. Step 5: Solve for x
    x = 526,529,805,660.06/779,633.92
  6. Step 6: Final answer
    x = 675,355.18

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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.