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Finding the Fourth Proportional to 963,608.40, 1,445,412.60 and 402,642.90

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Solution

The fourth proportional to 963,608.40, 1,445,412.60 and 402,642.90 is: 603,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    963,608.40 : 1,445,412.60 = 402,642.90 : x
  2. Step 2: Convert to fraction form
    963,608.40/1,445,412.60 = 402,642.90/x
  3. Step 3: Cross multiply
    963,608.40x = 1,445,412.60 × 402,642.90
  4. Step 4: Simplify right side
    963,608.40x = 581,985,120,960.54
  5. Step 5: Solve for x
    x = 581,985,120,960.54/963,608.40
  6. Step 6: Final answer
    x = 603,964.35

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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.