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Finding the Fourth Proportional to 586,269.60, 879,404.40 and 397,312.80

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Solution

The fourth proportional to 586,269.60, 879,404.40 and 397,312.80 is: 595,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,269.60 : 879,404.40 = 397,312.80 : x
  2. Step 2: Convert to fraction form
    586,269.60/879,404.40 = 397,312.80/x
  3. Step 3: Cross multiply
    586,269.60x = 879,404.40 × 397,312.80
  4. Step 4: Simplify right side
    586,269.60x = 349,398,624,496.32
  5. Step 5: Solve for x
    x = 349,398,624,496.32/586,269.60
  6. Step 6: Final answer
    x = 595,969.20

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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.