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Finding the Fourth Proportional to 593,890.80, 890,836.20 and 390,937.20

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Solution

The fourth proportional to 593,890.80, 890,836.20 and 390,937.20 is: 586,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,890.80 : 890,836.20 = 390,937.20 : x
  2. Step 2: Convert to fraction form
    593,890.80/890,836.20 = 390,937.20/x
  3. Step 3: Cross multiply
    593,890.80x = 890,836.20 × 390,937.20
  4. Step 4: Simplify right side
    593,890.80x = 348,261,009,686.64
  5. Step 5: Solve for x
    x = 348,261,009,686.64/593,890.80
  6. Step 6: Final answer
    x = 586,405.80

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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.