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Finding the Fourth Proportional to 1,971,312.40, 2,957,065.80 and 1,026,528.40

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Solution

The fourth proportional to 1,971,312.40, 2,957,065.80 and 1,026,528.40 is: 1,539,843.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,312.40 : 2,957,065.80 = 1,026,528.40 : x
  2. Step 2: Convert to fraction form
    1,971,312.40/2,957,065.80 = 1,026,528.40/x
  3. Step 3: Cross multiply
    1,971,312.40x = 2,957,065.80 × 1,026,528.40
  4. Step 4: Simplify right side
    1,971,312.40x = 3,035,512,024,368.72
  5. Step 5: Solve for x
    x = 3,035,512,024,368.72/1,971,312.40
  6. Step 6: Final answer
    x = 1,539,843.22

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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.