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Finding the Fourth Proportional to 1,947,342.40, 2,920,322.40 and 1,348,302.40

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Solution

The fourth proportional to 1,947,342.40, 2,920,322.40 and 1,348,302.40 is: 2,021,975.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947,342.40 : 2,920,322.40 = 1,348,302.40 : x
  2. Step 2: Convert to fraction form
    1,947,342.40/2,920,322.40 = 1,348,302.40/x
  3. Step 3: Cross multiply
    1,947,342.40x = 2,920,322.40 × 1,348,302.40
  4. Step 4: Simplify right side
    1,947,342.40x = 3,937,477,700,693.76
  5. Step 5: Solve for x
    x = 3,937,477,700,693.76/1,947,342.40
  6. Step 6: Final answer
    x = 2,021,975.03

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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.