Home / 991,618.61-1,487,463.14-317,612.34

Finding the Fourth Proportional to 991,618.61, 1,487,463.14 and 317,612.34

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Solution

The fourth proportional to 991,618.61, 1,487,463.14 and 317,612.34 is: 476,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,618.61 : 1,487,463.14 = 317,612.34 : x
  2. Step 2: Convert to fraction form
    991,618.61/1,487,463.14 = 317,612.34/x
  3. Step 3: Cross multiply
    991,618.61x = 1,487,463.14 × 317,612.34
  4. Step 4: Simplify right side
    991,618.61x = 472,436,649,353.18
  5. Step 5: Solve for x
    x = 472,436,649,353.18/991,618.61
  6. Step 6: Final answer
    x = 476,429.80

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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.