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Finding the Fourth Proportional to 612,466.40, 918,699.60 and 455,002.40

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Solution

The fourth proportional to 612,466.40, 918,699.60 and 455,002.40 is: 682,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,466.40 : 918,699.60 = 455,002.40 : x
  2. Step 2: Convert to fraction form
    612,466.40/918,699.60 = 455,002.40/x
  3. Step 3: Cross multiply
    612,466.40x = 918,699.60 × 455,002.40
  4. Step 4: Simplify right side
    612,466.40x = 418,010,522,879.04
  5. Step 5: Solve for x
    x = 418,010,522,879.04/612,466.40
  6. Step 6: Final answer
    x = 682,503.60

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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.