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Finding the Fourth Proportional to 655,386.78, 903,967.95 and 437,485.65

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Solution

The fourth proportional to 655,386.78, 903,967.95 and 437,485.65 is: 603,419.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,386.78 : 903,967.95 = 437,485.65 : x
  2. Step 2: Convert to fraction form
    655,386.78/903,967.95 = 437,485.65/x
  3. Step 3: Cross multiply
    655,386.78x = 903,967.95 × 437,485.65
  4. Step 4: Simplify right side
    655,386.78x = 395,473,006,184.92
  5. Step 5: Solve for x
    x = 395,473,006,184.92/655,386.78
  6. Step 6: Final answer
    x = 603,419.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.