Home / 918,014.40-1,377,021.60-286,927.20

Finding the Fourth Proportional to 918,014.40, 1,377,021.60 and 286,927.20

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Solution

The fourth proportional to 918,014.40, 1,377,021.60 and 286,927.20 is: 430,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,014.40 : 1,377,021.60 = 286,927.20 : x
  2. Step 2: Convert to fraction form
    918,014.40/1,377,021.60 = 286,927.20/x
  3. Step 3: Cross multiply
    918,014.40x = 1,377,021.60 × 286,927.20
  4. Step 4: Simplify right side
    918,014.40x = 395,104,952,027.52
  5. Step 5: Solve for x
    x = 395,104,952,027.52/918,014.40
  6. Step 6: Final answer
    x = 430,390.80

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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.