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Finding the Fourth Proportional to 610,440.90, 915,989.40 and 255,490.80

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Solution

The fourth proportional to 610,440.90, 915,989.40 and 255,490.80 is: 383,373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,440.90 : 915,989.40 = 255,490.80 : x
  2. Step 2: Convert to fraction form
    610,440.90/915,989.40 = 255,490.80/x
  3. Step 3: Cross multiply
    610,440.90x = 915,989.40 × 255,490.80
  4. Step 4: Simplify right side
    610,440.90x = 234,026,864,597.52
  5. Step 5: Solve for x
    x = 234,026,864,597.52/610,440.90
  6. Step 6: Final answer
    x = 383,373.50

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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.