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Finding the Fourth Proportional to 625,316.90, 937,975.70 and 439,159.46

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Solution

The fourth proportional to 625,316.90, 937,975.70 and 439,159.46 is: 658,739.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,316.90 : 937,975.70 = 439,159.46 : x
  2. Step 2: Convert to fraction form
    625,316.90/937,975.70 = 439,159.46/x
  3. Step 3: Cross multiply
    625,316.90x = 937,975.70 × 439,159.46
  4. Step 4: Simplify right side
    625,316.90x = 411,920,901,905.12
  5. Step 5: Solve for x
    x = 411,920,901,905.12/625,316.90
  6. Step 6: Final answer
    x = 658,739.44

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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.