Home / 879,485.70-1,319,228.55-214,637.70

Finding the Fourth Proportional to 879,485.70, 1,319,228.55 and 214,637.70

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Solution

The fourth proportional to 879,485.70, 1,319,228.55 and 214,637.70 is: 321,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,485.70 : 1,319,228.55 = 214,637.70 : x
  2. Step 2: Convert to fraction form
    879,485.70/1,319,228.55 = 214,637.70/x
  3. Step 3: Cross multiply
    879,485.70x = 1,319,228.55 × 214,637.70
  4. Step 4: Simplify right side
    879,485.70x = 283,156,181,746.34
  5. Step 5: Solve for x
    x = 283,156,181,746.34/879,485.70
  6. Step 6: Final answer
    x = 321,956.55

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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.