Home / 579,802.19-869,703.21-340,280.55

Finding the Fourth Proportional to 579,802.19, 869,703.21 and 340,280.55

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Solution

The fourth proportional to 579,802.19, 869,703.21 and 340,280.55 is: 510,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,802.19 : 869,703.21 = 340,280.55 : x
  2. Step 2: Convert to fraction form
    579,802.19/869,703.21 = 340,280.55/x
  3. Step 3: Cross multiply
    579,802.19x = 869,703.21 × 340,280.55
  4. Step 4: Simplify right side
    579,802.19x = 295,943,086,635.57
  5. Step 5: Solve for x
    x = 295,943,086,635.57/579,802.19
  6. Step 6: Final answer
    x = 510,420.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.