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Finding the Fourth Proportional to 610,466.80, 915,700.20 and 311,868.40

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Solution

The fourth proportional to 610,466.80, 915,700.20 and 311,868.40 is: 467,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,466.80 : 915,700.20 = 311,868.40 : x
  2. Step 2: Convert to fraction form
    610,466.80/915,700.20 = 311,868.40/x
  3. Step 3: Cross multiply
    610,466.80x = 915,700.20 × 311,868.40
  4. Step 4: Simplify right side
    610,466.80x = 285,577,956,253.68
  5. Step 5: Solve for x
    x = 285,577,956,253.68/610,466.80
  6. Step 6: Final answer
    x = 467,802.60

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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.