Home / 579,740.10-869,610.15-480,012.90

Finding the Fourth Proportional to 579,740.10, 869,610.15 and 480,012.90

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Solution

The fourth proportional to 579,740.10, 869,610.15 and 480,012.90 is: 720,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,740.10 : 869,610.15 = 480,012.90 : x
  2. Step 2: Convert to fraction form
    579,740.10/869,610.15 = 480,012.90/x
  3. Step 3: Cross multiply
    579,740.10x = 869,610.15 × 480,012.90
  4. Step 4: Simplify right side
    579,740.10x = 417,424,089,970.94
  5. Step 5: Solve for x
    x = 417,424,089,970.94/579,740.10
  6. Step 6: Final answer
    x = 720,019.35

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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.