Home / 916,539.20-1,374,256.50-411,008.78

Finding the Fourth Proportional to 916,539.20, 1,374,256.50 and 411,008.78

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Solution

The fourth proportional to 916,539.20, 1,374,256.50 and 411,008.78 is: 616,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,539.20 : 1,374,256.50 = 411,008.78 : x
  2. Step 2: Convert to fraction form
    916,539.20/1,374,256.50 = 411,008.78/x
  3. Step 3: Cross multiply
    916,539.20x = 1,374,256.50 × 411,008.78
  4. Step 4: Simplify right side
    916,539.20x = 564,831,487,472.07
  5. Step 5: Solve for x
    x = 564,831,487,472.07/916,539.20
  6. Step 6: Final answer
    x = 616,265.50

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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.