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Finding the Fourth Proportional to 869,351.60, 1,301,953.80 and 425,601.20

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Solution

The fourth proportional to 869,351.60, 1,301,953.80 and 425,601.20 is: 637,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,351.60 : 1,301,953.80 = 425,601.20 : x
  2. Step 2: Convert to fraction form
    869,351.60/1,301,953.80 = 425,601.20/x
  3. Step 3: Cross multiply
    869,351.60x = 1,301,953.80 × 425,601.20
  4. Step 4: Simplify right side
    869,351.60x = 554,113,099,624.56
  5. Step 5: Solve for x
    x = 554,113,099,624.56/869,351.60
  6. Step 6: Final answer
    x = 637,386.64

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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.