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Finding the Fourth Proportional to 985,840.80, 1,477,594.80 and 417,220.80

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Solution

The fourth proportional to 985,840.80, 1,477,594.80 and 417,220.80 is: 625,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,840.80 : 1,477,594.80 = 417,220.80 : x
  2. Step 2: Convert to fraction form
    985,840.80/1,477,594.80 = 417,220.80/x
  3. Step 3: Cross multiply
    985,840.80x = 1,477,594.80 × 417,220.80
  4. Step 4: Simplify right side
    985,840.80x = 616,483,284,531.84
  5. Step 5: Solve for x
    x = 616,483,284,531.84/985,840.80
  6. Step 6: Final answer
    x = 625,337.56

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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.