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Finding the Fourth Proportional to 659,455.64, 988,666.70 and 260,395.12

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Solution

The fourth proportional to 659,455.64, 988,666.70 and 260,395.12 is: 390,388.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,455.64 : 988,666.70 = 260,395.12 : x
  2. Step 2: Convert to fraction form
    659,455.64/988,666.70 = 260,395.12/x
  3. Step 3: Cross multiply
    659,455.64x = 988,666.70 × 260,395.12
  4. Step 4: Simplify right side
    659,455.64x = 257,443,983,920.36
  5. Step 5: Solve for x
    x = 257,443,983,920.36/659,455.64
  6. Step 6: Final answer
    x = 390,388.63

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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.