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Finding the Fourth Proportional to 605,030.30, 907,545.45 and 402,076.70

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Solution

The fourth proportional to 605,030.30, 907,545.45 and 402,076.70 is: 603,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,030.30 : 907,545.45 = 402,076.70 : x
  2. Step 2: Convert to fraction form
    605,030.30/907,545.45 = 402,076.70/x
  3. Step 3: Cross multiply
    605,030.30x = 907,545.45 × 402,076.70
  4. Step 4: Simplify right side
    605,030.30x = 364,902,879,636.02
  5. Step 5: Solve for x
    x = 364,902,879,636.02/605,030.30
  6. Step 6: Final answer
    x = 603,115.05

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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.