Home / 699,038.15-964,663.45-393,114.43

Finding the Fourth Proportional to 699,038.15, 964,663.45 and 393,114.43

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Solution

The fourth proportional to 699,038.15, 964,663.45 and 393,114.43 is: 542,492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,038.15 : 964,663.45 = 393,114.43 : x
  2. Step 2: Convert to fraction form
    699,038.15/964,663.45 = 393,114.43/x
  3. Step 3: Cross multiply
    699,038.15x = 964,663.45 × 393,114.43
  4. Step 4: Simplify right side
    699,038.15x = 379,223,118,894.14
  5. Step 5: Solve for x
    x = 379,223,118,894.14/699,038.15
  6. Step 6: Final answer
    x = 542,492.74

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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.