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Finding the Fourth Proportional to 590,985.20, 886,477.80 and 402,028.40

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Solution

The fourth proportional to 590,985.20, 886,477.80 and 402,028.40 is: 603,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,985.20 : 886,477.80 = 402,028.40 : x
  2. Step 2: Convert to fraction form
    590,985.20/886,477.80 = 402,028.40/x
  3. Step 3: Cross multiply
    590,985.20x = 886,477.80 × 402,028.40
  4. Step 4: Simplify right side
    590,985.20x = 356,389,251,569.52
  5. Step 5: Solve for x
    x = 356,389,251,569.52/590,985.20
  6. Step 6: Final answer
    x = 603,042.60

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Similar ratio
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1.5x scale

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.