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Finding the Fourth Proportional to 610,477.80, 915,716.70 and 278,701.80

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Solution

The fourth proportional to 610,477.80, 915,716.70 and 278,701.80 is: 418,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,477.80 : 915,716.70 = 278,701.80 : x
  2. Step 2: Convert to fraction form
    610,477.80/915,716.70 = 278,701.80/x
  3. Step 3: Cross multiply
    610,477.80x = 915,716.70 × 278,701.80
  4. Step 4: Simplify right side
    610,477.80x = 255,211,892,580.06
  5. Step 5: Solve for x
    x = 255,211,892,580.06/610,477.80
  6. Step 6: Final answer
    x = 418,052.70

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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.