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Finding the Fourth Proportional to 610,977.60, 916,466.40 and 398,404.80

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Solution

The fourth proportional to 610,977.60, 916,466.40 and 398,404.80 is: 597,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,977.60 : 916,466.40 = 398,404.80 : x
  2. Step 2: Convert to fraction form
    610,977.60/916,466.40 = 398,404.80/x
  3. Step 3: Cross multiply
    610,977.60x = 916,466.40 × 398,404.80
  4. Step 4: Simplify right side
    610,977.60x = 365,124,612,798.72
  5. Step 5: Solve for x
    x = 365,124,612,798.72/610,977.60
  6. Step 6: Final answer
    x = 597,607.20

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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.