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Finding the Fourth Proportional to 652,118.70, 978,178.05 and 402,941.10

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Solution

The fourth proportional to 652,118.70, 978,178.05 and 402,941.10 is: 604,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,118.70 : 978,178.05 = 402,941.10 : x
  2. Step 2: Convert to fraction form
    652,118.70/978,178.05 = 402,941.10/x
  3. Step 3: Cross multiply
    652,118.70x = 978,178.05 × 402,941.10
  4. Step 4: Simplify right side
    652,118.70x = 394,148,139,462.86
  5. Step 5: Solve for x
    x = 394,148,139,462.86/652,118.70
  6. Step 6: Final answer
    x = 604,411.65

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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.