Home / 921,361.23-1,271,521.80-539,511.03

Finding the Fourth Proportional to 921,361.23, 1,271,521.80 and 539,511.03

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Solution

The fourth proportional to 921,361.23, 1,271,521.80 and 539,511.03 is: 744,550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,361.23 : 1,271,521.80 = 539,511.03 : x
  2. Step 2: Convert to fraction form
    921,361.23/1,271,521.80 = 539,511.03/x
  3. Step 3: Cross multiply
    921,361.23x = 1,271,521.80 × 539,511.03
  4. Step 4: Simplify right side
    921,361.23x = 686,000,035,985.45
  5. Step 5: Solve for x
    x = 686,000,035,985.45/921,361.23
  6. Step 6: Final answer
    x = 744,550.58

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1.5x scale

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.