Home / 921,492.60-1,271,762.82-513,631.68

Finding the Fourth Proportional to 921,492.60, 1,271,762.82 and 513,631.68

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Solution

The fourth proportional to 921,492.60, 1,271,762.82 and 513,631.68 is: 708,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,492.60 : 1,271,762.82 = 513,631.68 : x
  2. Step 2: Convert to fraction form
    921,492.60/1,271,762.82 = 513,631.68/x
  3. Step 3: Cross multiply
    921,492.60x = 1,271,762.82 × 513,631.68
  4. Step 4: Simplify right side
    921,492.60x = 653,217,673,798.14
  5. Step 5: Solve for x
    x = 653,217,673,798.14/921,492.60
  6. Step 6: Final answer
    x = 708,869.15

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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.