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Finding the Fourth Proportional to 614,421.60, 921,632.40 and 401,845.20

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Solution

The fourth proportional to 614,421.60, 921,632.40 and 401,845.20 is: 602,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,421.60 : 921,632.40 = 401,845.20 : x
  2. Step 2: Convert to fraction form
    614,421.60/921,632.40 = 401,845.20/x
  3. Step 3: Cross multiply
    614,421.60x = 921,632.40 × 401,845.20
  4. Step 4: Simplify right side
    614,421.60x = 370,353,556,104.48
  5. Step 5: Solve for x
    x = 370,353,556,104.48/614,421.60
  6. Step 6: Final answer
    x = 602,767.80

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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.