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Finding the Fourth Proportional to 390,601.04, 585,901.55 and 370,655.60

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Solution

The fourth proportional to 390,601.04, 585,901.55 and 370,655.60 is: 555,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,601.04 : 585,901.55 = 370,655.60 : x
  2. Step 2: Convert to fraction form
    390,601.04/585,901.55 = 370,655.60/x
  3. Step 3: Cross multiply
    390,601.04x = 585,901.55 × 370,655.60
  4. Step 4: Simplify right side
    390,601.04x = 217,167,688,553.31
  5. Step 5: Solve for x
    x = 217,167,688,553.31/390,601.04
  6. Step 6: Final answer
    x = 555,983.39

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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.