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Finding the Fourth Proportional to 847,989, 1,272,566.70 and 349,353

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Solution

The fourth proportional to 847,989, 1,272,566.70 and 349,353 is: 524,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,989 : 1,272,566.70 = 349,353 : x
  2. Step 2: Convert to fraction form
    847,989/1,272,566.70 = 349,353/x
  3. Step 3: Cross multiply
    847,989x = 1,272,566.70 × 349,353
  4. Step 4: Simplify right side
    847,989x = 444,574,994,345.10
  5. Step 5: Solve for x
    x = 444,574,994,345.10/847,989
  6. Step 6: Final answer
    x = 524,269.77

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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.