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Finding the Fourth Proportional to 507,775.60, 700,728.88 and 281,421.12

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Solution

The fourth proportional to 507,775.60, 700,728.88 and 281,421.12 is: 388,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,775.60 : 700,728.88 = 281,421.12 : x
  2. Step 2: Convert to fraction form
    507,775.60/700,728.88 = 281,421.12/x
  3. Step 3: Cross multiply
    507,775.60x = 700,728.88 × 281,421.12
  4. Step 4: Simplify right side
    507,775.60x = 197,199,906,225.95
  5. Step 5: Solve for x
    x = 197,199,906,225.95/507,775.60
  6. Step 6: Final answer
    x = 388,360.34

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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.