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Finding the Fourth Proportional to 559,329.40, 837,025.80 and 390,055.60

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Solution

The fourth proportional to 559,329.40, 837,025.80 and 390,055.60 is: 583,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,329.40 : 837,025.80 = 390,055.60 : x
  2. Step 2: Convert to fraction form
    559,329.40/837,025.80 = 390,055.60/x
  3. Step 3: Cross multiply
    559,329.40x = 837,025.80 × 390,055.60
  4. Step 4: Simplify right side
    559,329.40x = 326,486,600,634.48
  5. Step 5: Solve for x
    x = 326,486,600,634.48/559,329.40
  6. Step 6: Final answer
    x = 583,710.78

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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.