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Finding the Fourth Proportional to 642,405.60, 962,607.60 and 242,828.40

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Solution

The fourth proportional to 642,405.60, 962,607.60 and 242,828.40 is: 363,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,405.60 : 962,607.60 = 242,828.40 : x
  2. Step 2: Convert to fraction form
    642,405.60/962,607.60 = 242,828.40/x
  3. Step 3: Cross multiply
    642,405.60x = 962,607.60 × 242,828.40
  4. Step 4: Simplify right side
    642,405.60x = 233,748,463,335.84
  5. Step 5: Solve for x
    x = 233,748,463,335.84/642,405.60
  6. Step 6: Final answer
    x = 363,864.30

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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.