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Finding the Fourth Proportional to 879,807.60, 1,214,148.60 and 477,399.60

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Solution

The fourth proportional to 879,807.60, 1,214,148.60 and 477,399.60 is: 658,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,807.60 : 1,214,148.60 = 477,399.60 : x
  2. Step 2: Convert to fraction form
    879,807.60/1,214,148.60 = 477,399.60/x
  3. Step 3: Cross multiply
    879,807.60x = 1,214,148.60 × 477,399.60
  4. Step 4: Simplify right side
    879,807.60x = 579,634,055,980.56
  5. Step 5: Solve for x
    x = 579,634,055,980.56/879,807.60
  6. Step 6: Final answer
    x = 658,819.11

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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.