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Finding the Fourth Proportional to 1,778,630.40, 2,495,059.20 and 1,778,630.40

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Solution

The fourth proportional to 1,778,630.40, 2,495,059.20 and 1,778,630.40 is: 2,495,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778,630.40 : 2,495,059.20 = 1,778,630.40 : x
  2. Step 2: Convert to fraction form
    1,778,630.40/2,495,059.20 = 1,778,630.40/x
  3. Step 3: Cross multiply
    1,778,630.40x = 2,495,059.20 × 1,778,630.40
  4. Step 4: Simplify right side
    1,778,630.40x = 4,437,788,142,919.68
  5. Step 5: Solve for x
    x = 4,437,788,142,919.68/1,778,630.40
  6. Step 6: Final answer
    x = 2,495,059.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.