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Finding the Fourth Proportional to 642,402.70, 963,604.05 and 603,036.70

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Solution

The fourth proportional to 642,402.70, 963,604.05 and 603,036.70 is: 904,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,402.70 : 963,604.05 = 603,036.70 : x
  2. Step 2: Convert to fraction form
    642,402.70/963,604.05 = 603,036.70/x
  3. Step 3: Cross multiply
    642,402.70x = 963,604.05 × 603,036.70
  4. Step 4: Simplify right side
    642,402.70x = 581,088,606,418.64
  5. Step 5: Solve for x
    x = 581,088,606,418.64/642,402.70
  6. Step 6: Final answer
    x = 904,555.05

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1.5x scale

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.