Home / 779,503.86-1,075,685.46-489,270.72

Finding the Fourth Proportional to 779,503.86, 1,075,685.46 and 489,270.72

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Solution

The fourth proportional to 779,503.86, 1,075,685.46 and 489,270.72 is: 675,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,503.86 : 1,075,685.46 = 489,270.72 : x
  2. Step 2: Convert to fraction form
    779,503.86/1,075,685.46 = 489,270.72/x
  3. Step 3: Cross multiply
    779,503.86x = 1,075,685.46 × 489,270.72
  4. Step 4: Simplify right side
    779,503.86x = 526,301,399,507.73
  5. Step 5: Solve for x
    x = 526,301,399,507.73/779,503.86
  6. Step 6: Final answer
    x = 675,174.85

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Double scale
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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.