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Finding the Fourth Proportional to 648,148.50, 894,445 and 357,760.16

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Solution

The fourth proportional to 648,148.50, 894,445 and 357,760.16 is: 493,709.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,148.50 : 894,445 = 357,760.16 : x
  2. Step 2: Convert to fraction form
    648,148.50/894,445 = 357,760.16/x
  3. Step 3: Cross multiply
    648,148.50x = 894,445 × 357,760.16
  4. Step 4: Simplify right side
    648,148.50x = 319,996,786,311.20
  5. Step 5: Solve for x
    x = 319,996,786,311.20/648,148.50
  6. Step 6: Final answer
    x = 493,709.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.